Comparison of Adjectives in Finnish

In Brief

Finnish normally forms the comparative (the form meaning “more” or “-er”) with -mpi and the superlative (the form meaning “most” or “-est”) with -in: iso → isompi → isoin (“big → bigger → biggest”). Use kuin for “than,” as in halvempi kuin tuo, or put a pronoun or noun in the partitive case: minua vanhempi (“older than me”). The most important irregular set is hyvä → parempi → paras (“good → better → best”).

Overview

Comparison lets you place people, things, and experiences on a scale: one apartment is bigger, a train is faster, or one option is the best. Finnish has three degrees of comparison: the positive degree, which is the ordinary adjective (iso, “big”); the comparative (isompi, “bigger”); and the superlative (isoin, “biggest”).

This topic is introduced at A2 because the basic idea is compact and useful. Unlike English, Finnish does not normally choose between an “-er” form and a separate word like “more.” The comparison is built into the adjective with an ending. However, adding that ending may change the adjective stem, and the resulting word can then take Finnish case and number endings.

You should already be comfortable with basic adjective agreement. An adjective placed before a noun agrees with that noun in case (the ending that shows the word’s role) and number. Comparative and superlative adjectives follow the same broad principle: isommassa talossa means “in a bigger house,” with both words in the inessive “in” case.

How It Works

The three degrees

Degree	Main marker	Finnish	English
Positive	no comparison marker	iso	big
Comparative	-mpi	isompi	bigger
Superlative	-in	isoin	biggest

The beginner rule is simple: learn common adjectives as a three-part series. This makes stem changes easier to remember than trying to reconstruct every form while speaking.

Forming the comparative

The comparative is formed from an adjective stem plus -mpi. With many common adjectives, the result is transparent:

Positive	Comparative	English
iso	isompi	big → bigger
pieni	pienempi	small → smaller
nopea	nopeampi	fast → faster
kallis	kalliimpi	expensive → more expensive
kaunis	kauniimpi	beautiful → more beautiful
uusi	uudempi	new → newer

Some adjectives ending in -a/-ä change that final vowel to e before -mpi, especially many common two-syllable adjectives:

• vanha → vanhempi (“old → older”)
• halpa → halvempi (“cheap → cheaper”)
• pitkä → pitempi (“long → longer”)

Do not turn this into a rule for every adjective ending in -a: nopea → nopeampi and mukava → mukavampi. Vocabulary shape and stem type matter, so the safest method is to learn the comparison series with each frequent adjective.

Forming the superlative

The superlative usually contains -in, but the stem is often less obvious than in the comparative. Compare these useful sets:

Positive	Comparative	Superlative	English
iso	isompi	isoin	big, bigger, biggest
pieni	pienempi	pienin	small, smaller, smallest
nopea	nopeampi	nopein	fast, faster, fastest
vanha	vanhempi	vanhin	old, older, oldest
halpa	halvempi	halvin	cheap, cheaper, cheapest
kaunis	kauniimpi	kaunein	beautiful, more beautiful, most beautiful
kallis	kalliimpi	kallein	expensive, more expensive, most expensive
pitkä	pitempi	pisin	long, longer, longest

Forms such as vanhin, halvin, and pisin show why merely replacing -mpi with -in does not work. Treat the superlative as its own form and check a dictionary when learning a new stem type.

Saying “than”: two common patterns

The most direct equivalent of English “than” is kuin. The item after kuin appears in the form required by its own understood role in the comparison:

• Tämä talo on isompi kuin tuo talo. — “This house is bigger than that house.”
• Hän on vanhempi kuin minä. — “He/She is older than I am.”
• Pidän teestä enemmän kuin kahvista. — “I like tea more than coffee.” Here the verb pitää requires the elative forms teestä and kahvista.

A compact alternative puts the person or thing used as the standard of comparison in the partitive case (often expressing an incomplete amount or, here, the standard being exceeded):

• Hän on minua vanhempi. — “He/She is older than me.”
• Turku on Helsinkiä pienempi. — “Turku is smaller than Helsinki.”
• Tämä vaihtoehto on edellistä halvempi. — “This option is cheaper than the previous one.”

For a beginner, comparative + kuin is the easiest productive pattern. The partitive pattern is very common and worth learning, but it should not be combined with kuin: choose minua vanhempi or vanhempi kuin minä, not both.

Superlatives and the comparison group

A superlative often needs a group: the best of these, the tallest in the class, or Finland’s largest city. Finnish commonly expresses that group with the genitive -n form or an elative “out of/from” form.

• Suomen suurin kaupunki — “Finland’s largest city”
• luokan nuorin opiskelija — “the youngest student in the class”
• näistä paras — “the best of these”
• koko vuoden kylmin päivä — “the coldest day of the whole year”

Finnish has no articles corresponding directly to English “a” and “the.” The superlative itself and the context normally make the meaning definite: Tämä on paras naturally means “This is the best.”

Declining comparison forms

Comparatives and superlatives are adjectives, so they change for case and number. Their stems are not always identical to the nominative form (the basic dictionary form).

Form needed	Comparative of iso	Superlative of iso	Example
Nominative singular	isompi	isoin	isompi asunto, isoin asunto
Genitive singular	isomman	isoimman	isomman asunnon ovi
Partitive singular	isompaa	isointa	isompaa asuntoa, isointa asuntoa
Inessive singular	isommassa	isoimmassa	isommassa asunnossa, isoimmassa asunnossa
Nominative plural	isommat	isoimmat	isommat asunnot, isoimmat asunnot

Notice the comparative stem isompa-/isomma- and superlative stems such as isoimma- and isointa. Consonant gradation (a regular alternation within a word stem) accounts for contrasts such as isompi → isomman. At A2, memorise a few high-frequency forms and recognise the pattern; a full command of every case can develop gradually.

When the adjective comes before a noun, both words agree:

• isompi talo — “a bigger house”
• isommassa talossa — “in a bigger house”
• isoimmat talot — “the biggest houses”

When the adjective follows olla (“to be”), it is a predicative adjective—an adjective that describes the subject after “be”: Talo on isompi (“The house is bigger”). Its exact number and case behavior follows the normal Finnish rules for predicative adjectives.

Key irregular forms

Positive	Comparative	Superlative	Meaning
hyvä	parempi	paras	good, better, best
paha	pahempi	pahin	bad, worse, worst
pitkä	pitempi	pisin	long, longer, longest

Huono → huonompi → huonoin also means “bad → worse → worst” and is structurally more predictable. Paha can mean “bad,” “evil,” “severe,” or “nasty,” while huono often means poor in quality, weak, or not good. Context determines which set sounds natural.

Examples in Context

Finnish	English	Note
Uusi asunto on isompi kuin vanha.	The new apartment is bigger than the old one.	Basic kuin comparison
Hän on minua vanhempi.	He/She is older than me.	Partitive standard: minua
Tämä takki on halvempi kuin tuo.	This coat is cheaper than that one.	Demonstrative after kuin
Juna on bussia nopeampi.	The train is faster than the bus.	Partitive standard: bussia
Tarvitsen isomman pöydän.	I need a bigger table.	Comparative and noun both change form
Asumme rauhallisemmassa kaupunginosassa.	We live in a quieter neighborhood.	Both words use the inessive case
Tämä tehtävä on helpompi kuin ensimmäinen.	This exercise is easier than the first one.	Comparative helpompi
Kumpi reitti on lyhyempi?	Which of the two routes is shorter?	kumpi asks which of two
Tämä on paras vaihtoehto.	This is the best option.	Irregular hyvä → paras
Hän on ryhmän nuorin.	He/She is the youngest in the group.	Genitive comparison group
Mikä näistä on kaunein?	Which of these is the most beautiful?	Elative plural näistä
Tänään on viikon kylmin päivä.	Today is the coldest day of the week.	Genitive group viikon
Nämä ovat kaupungin kalleimmat asunnot.	These are the city’s most expensive apartments.	Superlative plural agreement
Kahvi on yhtä kuumaa kuin tee.	The coffee is as hot as the tea.	Equality with yhtä … kuin
Mitä aikaisemmin lähdemme, sitä parempi.	The earlier we leave, the better.	Advanced paired comparison

Common Mistakes

Building the superlative directly from the comparative

• Wrong: isompin
• Right: isoin
• Why: The comparative and superlative are formed from adjective stems, not by attaching -n to isompi. Learn iso → isompi → isoin as a set.

Using the positive adjective with kuin

• Wrong: Tämä talo on iso kuin tuo when you mean “bigger than that one.”
• Right: Tämä talo on isompi kuin tuo.
• Why: Kuin introduces the standard, but the adjective itself must still be comparative. The wrong sentence can instead suggest “as big as” in some contexts, but the clear equality pattern is yhtä iso kuin.

Mixing the two “than” patterns

• Wrong: Hän on minua vanhempi kuin minä.
• Right: Hän on minua vanhempi. / Hän on vanhempi kuin minä.
• Why: Partitive minua and kuin minä are alternative ways to express the standard. Do not state the same standard twice.

Forgetting agreement before a noun

• Wrong: isompi talossa
• Right: isommassa talossa
• Why: A modifying adjective agrees with its noun in case. The inessive “in” ending appears on both words.

Using hyvempi or hyvin

• Wrong: Tämä on hyvempi. / Tämä on hyvin.
• Right: Tämä on parempi. / Tämä on hyvä.
• Why: Parempi is the irregular comparative of hyvä. Hyvin is usually the adverb “well,” not the adjective “good.”

Copying English “more + adjective” word for word

• Wrong: enemmän kallis
• Right: kalliimpi
• Why: Finnish normally marks comparison on the adjective. Enemmän means “more” for amounts or as an adverb, but it does not replace the ordinary comparative ending on kallis.

Usage Notes

Both vanhempi kuin minä and minua vanhempi are standard and natural. The kuin pattern often feels especially transparent to English speakers because its structure resembles “older than I am.” The partitive construction is compact and frequent in both speech and writing.

With two choices, Finnish often uses kumpi (“which of the two”) and a comparative: Kumpi on parempi? (“Which one is better?”). With three or more choices, mikä näistä plus a superlative is natural: Mikä näistä on paras? (“Which of these is the best?”). This is a useful distinction even though everyday usage does not always spell out the size of the set.

To express equality, use yhtä + positive adjective + kuin:

• Anna on yhtä pitkä kuin Liisa. — “Anna is as tall as Liisa.”
• Tämä ei ole yhtä kallis kuin tuo. — “This is not as expensive as that one.”

Finnish comparison forms occur freely in formal writing and everyday conversation. Spoken Finnish may shorten pronouns or use other colloquial forms around them, but common comparison forms such as parempi, isompi, and paras remain central and recognizable.

Beyond the Basics / Advanced Use

You do not need to master the following patterns at A2, but you will meet them often later.

Comparing actions and quantities

Comparison is not limited to adjectives. Finnish also compares adverbs and quantities:

• nopeasti → nopeammin → nopeimmin — “quickly → more quickly → most quickly”
• hyvin → paremmin → parhaiten — “well → better → best”
• paljon → enemmän → eniten — “much/a lot → more → most”
• vähän → vähemmän → vähiten — “little → less → least”

This explains forms such as Puhu hitaammin (“Speak more slowly”) and Hän työskentelee tehokkaimmin (“He/She works most efficiently”). Adverb comparison is related to adjective comparison, but the endings differ, so learn it as a neighboring system rather than forcing adjective endings onto adverbs.

“The more…, the more…”

Finnish uses the paired structure mitä …, sitä …:

• Mitä enemmän harjoittelet, sitä helpommaksi suomi muuttuu. — “The more you practise, the easier Finnish becomes.”
• Mitä nopeammin, sitä parempi. — “The sooner, the better.”

The words following mitä and sitä are commonly comparative forms. This construction is productive in both speech and writing.

Strengthening and softening a comparison

Words can show the size of the difference:

• paljon parempi — “much better”
• huomattavasti halvempi — “considerably cheaper”
• vähän suurempi — “a little larger”
• vielä vaikeampi — “even more difficult”
• kaikkein paras — “the very best / best of all”

In careful style, a plain superlative is often enough where English uses “the most.” Kaikkein adds emphasis; it is not required to create the superlative.

Comparison forms as nouns

Finnish can use an adjective without an expressed noun when the missing noun is clear:

• Otan halvemman. — “I’ll take the cheaper one.”
• Paras voitti. — “The best one won.”
• Valitse pienin. — “Choose the smallest one.”

The adjective then takes the case required by the sentence. This is one reason it is useful to recognize declined forms such as halvemman and pienintä, not only dictionary forms.

Practice Tips

1. Learn three forms together. Make cards such as vanha – vanhempi – vanhin and hyvä – parempi – paras. Say one short sentence with each form rather than memorising an isolated suffix.
2. Practise both comparison patterns. Convert Matti on vanhempi kuin Liisa into Matti on Liisaa vanhempi. Start with names and pronouns, then add ordinary nouns.
3. Add one case at a time. Build a small chain: isompi talo → isomman talon → isommassa talossa. This links comparison to adjective agreement without requiring a full declension table in one session.

Related Concepts

• Prerequisite: Adjective Agreement — explains why an adjective and its noun take matching case and number forms.