ダサい

ださい

i-adjective

uncool, lame

slangdescriptive

Conjugation

	Affirmative	Negative
Present	ダサい	ダサくない
Past	ダサかった	ダサくなかった
て form	ダサくて	ダサくなくて
Adverbial	ダサく	—
Conditional ば	ダサければ	ダサくなければ
Conditional たら	ダサかったら	ダサくなかったら

1. uncool, lame, unfashionable

Describing something or someone lacking style or sophistication. Slang.

ダサいデザインだね。

That's a lame design.

その服(ふく)、ちょっとダサくない？

Isn't that outfit a bit uncool?

昔(むかし)はダサかったけど、今(いま)はおしゃれになった。

They used to be uncool, but now they're stylish.

ダサい is a slang i-adjective meaning unfashionable, uncool, or lame.

Etymology

Origins disputed. Possibly from 田舎(いなか) (countryside) + さい, implying 'country bumpkin style.'

Forms

Adverbial: ダサく
Te-form: ダサくて
Past: ダサかった

Usage

Can describe fashion, behavior, ideas, or people. Usually written in katakana. Common in casual speech, especially among younger speakers.

Similar words

かっこ悪(わる)い: uncool (more neutral)
格好(かっこう)悪(わる)い: unfashionable (formal)
イケてない: not cool (slang)

Opposite: かっこいい (cool, stylish).

Related Words

Antonym: かっこいい (cool)

Compare: かっこわるい (uncool)

Compare: キモい (gross, creepy)

Antonym: イケてる (cool, stylish)

Related: 野暮(やぼ)ったい (unfashionable, tacky, unsophisticated)

Compare: 不格好(ぶかっこう) (awkward-looking)

Compare: 田舎臭(いなかくさ)い (countrified)

Compare: 流行遅(りゅうこうおく)れ (out of fashion)

general

Added 2026.1.16 8:51 · Revised 2026.9.2 13:01

04500/04752_dasai