Comparatives and Superlatives in Persian

Overview

Forming comparatives and superlatives in Persian is remarkably regular. To say "bigger," add تر (-tar) to the adjective: بزرگ‌تر (bozorgtar). To say "biggest," add ترین (-tarin): بزرگ‌ترین (bozorgtarin). These suffixes work with almost every adjective, making the system easy to learn at the B1 level.

Comparisons use the preposition از (az, "than") where English uses "than": تهران بزرگ‌تر از اصفهان است (Tehran is bigger than Isfahan). The superlative places the adjective before the noun with the ezafe: بزرگ‌ترین شهر (the biggest city). There are only a few irregular forms to memorize, most notably بهتر (better) and بدتر (worse).

How It Works

Comparative: adjective + تر (-tar) + از (az, than)

Adjective	Comparative	Example
بزرگ (big)	بزرگ‌تر (bigger)	تهران بزرگ‌تر از اصفهان است.
کوچک (small)	کوچک‌تر (smaller)	این خانه کوچک‌تر است.
خوب (good)	بهتر (better)	Irregular
بد (bad)	بدتر (worse)	Irregular
زیاد (much)	بیشتر (more)	Irregular
کم (little)	کمتر (less)	Regular

Superlative: adjective + ترین (-tarin)

Adjective	Superlative	Example
بزرگ	بزرگ‌ترین	بزرگ‌ترین شهر ایران (the biggest city in Iran)
خوب	بهترین	بهترین دوست من (my best friend)
بد	بدترین	بدترین روز (the worst day)

Key rules:

• Superlative adjective comes BEFORE the noun (unlike regular adjectives): بزرگ‌ترین شهر (not شهر بزرگ‌ترین)
• از connects the compared items: A + comparative + از + B
• "As...as" = به اندازهٔ (be andāze-ye): به اندازهٔ تو بلند (as tall as you)

Examples in Context

Persian	English	Note
تهران بزرگ‌تر از اصفهان است.	Tehran is bigger than Isfahan.	Comparison
او باهوش‌ترین دانشجو است.	He/She is the smartest student.	Superlative
امروز سردتر از دیروز است.	Today is colder than yesterday.	Weather
این غذا خوش‌مزه‌تر است.	This food is tastier.	Food
بهترین فیلم سال	the best movie of the year	Superlative
کمتر حرف بزن.	Talk less.	Adverbial comparative
بیشتر تمرین کن.	Practice more.	Adverbial comparative
این ارزان‌تر از آن است.	This is cheaper than that.	Price
بلندترین کوه ایران دماوند است.	The tallest mountain in Iran is Damavand.	Geography
هر چه بیشتر، بهتر.	The more, the better.	Proverb pattern

Common Mistakes

Placing superlative after the noun

• Wrong: شهر بزرگ‌ترین
• Right: بزرگ‌ترین شهر
• Why: Unlike regular adjectives (which follow the noun), superlatives precede the noun.

Forgetting از in comparisons

• Wrong: تهران بزرگ‌تر اصفهان
• Right: تهران بزرگ‌تر از اصفهان
• Why: The comparison marker از (than) is required between the two items being compared.

Regularizing irregular comparatives

• Wrong: خوب‌تر (gooder)
• Right: بهتر (better)
• Why: خوب → بهتر and بد → بدتر are irregular and must be memorized.

Usage Notes

In colloquial speech, comparative forms are sometimes used without an explicit comparison to mean "fairly" or "rather": بزرگ‌تره (it's fairly big), بهتره بریم (it would be better if we go). This softening use is common in everyday recommendations and opinions.

Practice Tips

1. Compare things around you: این اتاق بزرگ‌تر از آن اتاق است (this room is bigger than that room). Practice with different adjectives.
2. Memorize the three irregular forms: خوب→بهتر→بهترین, بد→بدتر→بدترین, زیاد→بیشتر→بیشترین.
3. Practice superlatives with geography and culture: بزرگ‌ترین شهر (biggest city), معروف‌ترین شاعر (most famous poet), قدیمی‌ترین مسجد (oldest mosque).

Related Concepts

• Adjectives and Agreement — the base adjective system that comparatives build on