Knowing and Understanding in Indonesian

In Brief

English know covers several ideas that Indonesian usually keeps separate. Use tahu for facts or information, kenal for being acquainted with someone or familiar with something, mengerti or paham for understanding, and bisa for having the ability or knowing how to do something.

Overview

In English, you can “know” an answer, a person, what someone means, or how to cook. Indonesian normally chooses a different verb for each relationship. Compare Saya tahu jawabannya (“I know the answer”), Saya kenal dia (“I know him/her”), Saya mengerti penjelasannya (“I understand the explanation”), and Saya bisa masak (“I can cook”). Learning this contrast prevents one of the most common word-for-word translation errors.

This is an A1 topic because these words are useful from your first conversations. You need them to say that you do not know, check whether someone understands, describe a skill, and talk about people you know. The beginner rule is reliable: tahu = information, kenal = acquaintance, mengerti/paham = comprehension, and bisa = ability.

Indonesian verbs do not change for person or number. The same form tahu appears after saya (“I”), dia (“he/she”), and mereka (“they”). The subject (the person or thing the sentence is about) may also be left unstated when the context makes it clear: Tidak tahu can mean “I don’t know,” “we don’t know,” or “he/she doesn’t know.”

How It Works

The core choices

Indonesian	Core meaning	Typical object or complement	Example
tahu	know information; be aware	a fact, answer, name, place of something, or a clause	Saya tahu jawabannya.
kenal	know through acquaintance; be familiar with	a person, organization, place, product, or work	Saya kenal Bu Rina.
mengerti	understand the meaning or logic	words, a language, explanation, situation	Saya mengerti maksudnya.
paham	understand; grasp well	an idea, topic, rule, situation	Saya paham masalahnya.
bisa	can; know how to	an action expressed by another verb	Saya bisa berenang.

An object is the person or thing affected by or connected to the verb. In Saya kenal dia, dia is the object: the person whom I know. A clause is a group of words containing its own subject and statement, such as dia tinggal di mana (“where he/she lives”).

Tahu: knowing a fact or having information

Use tahu when information is in your mind or when you are aware of something:

• Saya tahu namanya. — “I know his/her name.”
• Kamu tahu alamatnya? — “Do you know the address?”
• Dia tahu bahwa toko itu tutup. — “He/She knows that the shop is closed.”

Tahu can be followed directly by a noun phrase (a noun and the words around it), as in tahu jawabannya. It can also introduce an embedded question—an indirect question contained inside a larger sentence:

• Saya tahu dia tinggal di mana. — “I know where he/she lives.”
• Kami tidak tahu siapa yang menelepon. — “We don’t know who called.”

The conjunction bahwa means “that” before a full statement. It is common in careful speech and writing, but is often omitted in ordinary conversation: Saya tahu (bahwa) dia sibuk.

Do not normally use tahu merely because you have met someone. For personal acquaintance, choose kenal.

Kenal: knowing by acquaintance or familiarity

Use kenal when you have some personal familiarity with a person:

• Saya kenal dia. — “I know him/her.”
• Kamu kenal Pak Adi? — “Do you know Mr. Adi?”
• Kami belum kenal. — “We haven’t met / don’t know each other yet.”

The same idea can extend beyond people. You can be familiar with a neighborhood, brand, song, or body of work: Saya cukup kenal daerah ini (“I know this area fairly well”). Here kenal suggests familiarity gained through experience, not simply knowing one fact about the area.

Add baik to express close or thorough familiarity: Saya kenal dia dengan baik (“I know him/her well”). In everyday speech, Saya kenal dia baik may also be heard, but dengan baik is the clearer general-purpose form.

Mengerti and paham: understanding

Both mengerti and paham can translate “understand.” At beginner level, they are often interchangeable:

• Saya mengerti. — “I understand.”
• Saya paham. — “I understand / I get it.”
• Saya tidak mengerti pertanyaannya. — “I don’t understand the question.”

Mengerti often focuses on making sense of words, an explanation, or a situation. Paham often suggests grasping a topic, principle, or situation. This is a tendency rather than a strict boundary: native speakers can naturally say either mengerti aturan ini or paham aturan ini.

English speakers sometimes say “I know” to mean “I understand what you mean.” Indonesian generally uses mengerti or paham there, not tahu: Saya mengerti maksudmu (“I understand what you mean”).

Bisa: ability and knowing how

Place bisa before an action verb to say that someone can perform an action:

• Saya bisa masak. — “I can cook / I know how to cook.”
• Dia bisa menyetir. — “He/She can drive.”
• Mereka belum bisa membaca. — “They cannot read yet.”

English commonly uses “know how to,” but Indonesian normally does not need tahu in this pattern. Bisa expresses the practical ability directly. If you specifically mean knowledge of the method rather than ability to carry it out, use tahu cara (“know the way/how”):

• Saya tahu cara membuatnya, tetapi saya tidak bisa membuatnya sendiri. — “I know how it is made, but I cannot make it myself.”

This contrast separates knowledge from actual capability.

Negation and questions

Use tidak before these verbs to negate them:

Statement	Negative	Meaning
Saya tahu.	Saya tidak tahu.	I know. / I don’t know.
Saya kenal dia.	Saya tidak kenal dia.	I know him/her. / I don’t know him/her.
Saya mengerti.	Saya tidak mengerti.	I understand. / I don’t understand.
Saya bisa berenang.	Saya tidak bisa berenang.	I can swim. / I can’t swim.

Use belum (“not yet”) when the situation may change: Saya belum paham means “I don’t understand yet,” and Kami belum kenal can mean “We haven’t met / become acquainted yet.”

In conversation, a yes/no question can keep ordinary statement order and use rising intonation: Kamu mengerti? You will also hear the compact pattern Mengerti tidak? (“Do you understand or not?”). Apakah can introduce a more explicit or more formal question: Apakah Anda paham?

Examples in Context

Indonesian	English	Note
Saya tidak tahu.	I don’t know.	A complete, everyday answer
Kamu tahu jam berapa rapatnya?	Do you know what time the meeting is?	tahu + embedded question
Dia tahu bahwa saya sudah datang.	He/She knows that I have arrived.	bahwa introduces a fact
Saya kenal dia.	I know him/her.	Personal acquaintance
Kamu kenal restoran ini?	Are you familiar with this restaurant?	Familiarity with a place
Kami belum kenal.	We haven’t met yet.	belum leaves open a later change
Mengerti tidak?	Do you understand?	Compact conversational question
Maaf, saya tidak mengerti pertanyaannya.	Sorry, I don’t understand the question.	Useful in class or conversation
Sekarang saya paham.	Now I understand.	A new realization
Dia sangat paham soal komputer.	He/She understands computers very well.	Knowledge of a field
Saya bisa masak.	I can cook.	Practical ability
Adik saya belum bisa membaca.	My younger sibling cannot read yet.	Ability not acquired yet
Anda tahu cara membukanya?	Do you know how to open it?	Knowledge of the method
Saya tahu caranya, tetapi saya tidak bisa melakukannya.	I know how, but I can’t do it.	Knowledge contrasted with ability

Common Mistakes

Using tahu for personal acquaintance

• Wrong: Saya tahu dia. (intended: “I know him/her.”)
• Right: Saya kenal dia.
• Why: Kenal expresses acquaintance with a person. Tahu concerns information; Saya tahu siapa dia is correct when you mean “I know who he/she is.”

Using kenal for a fact

• Wrong: Saya kenal jawabannya.
• Right: Saya tahu jawabannya.
• Why: An answer is information, not someone or something with which you are acquainted.

Translating “know how” with tahu in every case

• Less natural for ordinary ability: Saya tahu memasak.
• Natural: Saya bisa masak.
• Why: Use bisa for a learned skill or practical ability. Use tahu cara memasak when the method itself is the point.

Using tahu for comprehension

• Wrong: Saya tidak tahu penjelasan ini. (intended: “I don’t understand this explanation.”)
• Right: Saya tidak mengerti penjelasan ini.
• Also right: Saya tidak paham penjelasan ini.
• Why: Understanding meaning or reasoning calls for mengerti or paham.

Negating these verbs with bukan

• Wrong: Saya bukan tahu.
• Right: Saya tidak tahu.
• Why: Tidak normally negates verbs and adjectives. Bukan rejects a noun identity or corrects a choice, as in Bukan saya (“Not me”).

Usage Notes

Full forms and everyday short forms

The standard forms mengerti and memahami are common in careful speech and writing. Informal conversation often shortens mengerti to ngerti: Aku nggak ngerti (“I don’t understand”). Nggak is an informal form of tidak, and aku is a familiar “I.” These forms are useful to recognize, but Saya tidak mengerti is safe in almost any ordinary setting.

Tahu is often pronounced or informally written tau. Standard spelling is tahu, so use that form in formal writing and while learning the basic vocabulary.

Paham and mengerti are close, not identical twins

There is no simple rule that makes one word correct in every context. Mengerti bahasa Indonesia can mean understanding Indonesian; paham bahasa Indonesia is also possible and may imply a solid grasp. With a complex subject, paham is especially natural: Dia paham hukum pajak (“He/She understands tax law”). With someone’s intention, mengerti maksudnya is very common.

Ability is not permission

Bisa mainly marks ability and can also express possibility. Permission is more clearly expressed with boleh: Saya bisa masuk means “I can/am able to enter,” while Boleh saya masuk? asks “May I come in?” Context sometimes allows bisa in requests, but beginners should keep ability and permission separate.

Beyond the Basics / Advanced Use

You do not need to produce all of these forms at A1, but you will meet them in formal Indonesian.

The related prefixed verbs mengetahui, mengenal, and memahami are common in writing and formal speech. Their meanings overlap with the basic words, but their grammar and tone can differ:

Form	Typical use	Example
mengetahui	know, find out, or be aware of information; formal	Kami mengetahui hasilnya kemarin. — “We learned/knew the result yesterday.”
mengenal	know or recognize a person, thing, or characteristic	Saya mengenal kota ini dengan baik. — “I know this city well.”
memahami	understand something in depth; often formal	Kita perlu memahami masalah ini. — “We need to understand this problem.”

In informal speech, the simpler forms tahu, kenal, and paham/mengerti are often preferred. Do not assume, however, that every prefixed form can always be exchanged mechanically for its base form; affixes can affect sentence structure, emphasis, and register.

Tahu also appears in fixed conversational expressions. Siapa tahu means “who knows; perhaps”: Siapa tahu dia datang nanti (“Perhaps he/she will come later”). Tahu-tahu describes something happening unexpectedly or without the speaker noticing the process: Tahu-tahu sudah malam (“Before I knew it, it was already night”). These are whole expressions, not ordinary uses of tahu plus an object.

A finer distinction also appears between knowing that and recognizing. Saya tahu nama itu means “I know that name / have information about that name,” while Saya mengenali wajahnya means “I recognize his/her face.” Mengenali belongs to a more advanced family of affixed verbs and is worth recognizing when reading.

Practice Tips

1. Sort English “know” sentences by meaning. For each sentence, ask: Is this information, acquaintance, comprehension, or ability? Then choose tahu, kenal, mengerti/paham, or bisa before translating.
2. Build four personal sentences. Say one true sentence with each category, such as something you know, someone you know, a topic you understand, and a skill you can perform. Change each one into a negative sentence with tidak or belum.
3. Listen for short answers. In Indonesian conversations, subjects are often omitted. Practice recognizing Tahu, Tidak tahu, Paham, Belum paham, and Bisa as complete replies whose subject comes from context.

Related Concepts

• Prerequisite: Basic Verb Structure — explains unchanged verb forms, basic word order, and how context supplies time and subject information.
• Useful companion: Bisa and Boleh (Can/May) — develops the contrast between ability, possibility, and permission.