でかい

でかい
i-adjective
big; huge; large
informalcolloquialsize
Conjugation
AffirmativeNegative
Presentでかいでかくない
Pastでかかったでかくなかった
て formでかくてでかくなくて
Adverbialでかく—
Conditional ばでかければでかくなければ
Conditional たらでかかったらでかくなかったら
1. big; huge; large
Describing something of great size. A casual/emphatic alternative to 大きい.
でかい犬(いぬ)だな。
That's a big dog.
この魚(さかな)でかすぎ！
This fish is way too big!
でかい声(こえ)で話(はな)すな。
Don't talk so loud.

でかい is a casual/emphatic version of 大(おお)きい. It may come from the Kanto dialect or from 凸(でこ) (protrusion).

Register

This is casual/colloquial language. Use 大(おお)きい in polite or formal contexts.

As an i-adjective: でかくない (negative), でかかった (past), でかく (adverb form).

Common expressions

Related Words

Related: 大(おお)きい (polite equivalent)
Antonym: ちっちゃい (small, tiny (casual))
Compare: ごつい (rugged)
general
Added 2026.2.1 16:14 · Revised 2026.9.2 13:01
09000/09320_dekai