でかい

でかい
i-adjective
big; huge; large
1. big; huge; large
Describing something of great size. A casual/emphatic alternative to 大きい.
でかい(いぬ)だな。
That's a big dog.
この(さかな)でかすぎ!
This fish is way too big!
でかい(こえ)(はな)すな。
Don't talk so loud.

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

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

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

COMMON EXPRESSIONS:

  • でかい態度(たいど): arrogant attitude (lit. "big attitude")
  • でかい(かお)をする: to act big/arrogant
  • でかすぎ: way too big