すぎる details

write + too …

kaki sugiru

too …; overdo

meaning: write too much

昨日きのうは飲のみすぎて、今朝けさは頭あたまが痛いたいよ。

kinou wa nomisugite, kesa wa atama ga itai yo.

I drank too much yesterday and my head hurts this morning. casual

ダイエット中ちゅうなのに、つい食べたべすぎる。

daietto chuu na noni, tsui tabe sugiru.

I'm on a diet, and yet I just eat too much. casual

colloquial
past
polite
negative

Examples

too …; excessively — the degree or amount exceeds what is proper

昨日きのうは飲のみすぎて、今朝けさは頭あたまが痛いたいよ。

kinou wa nomisugite, kesa wa atama ga itai yo.

I drank too much yesterday and my head hurts this morning. casual

ダイエット中ちゅうなのに、つい食たべすぎる。

daietto chuu na noni, tsui tabesugiru.

I'm on a diet, and yet I just eat too much. casual

この靴くつは私わたしには大おおきすぎます。

kono kutsu wa watashi ni wa ookisugimasu.

These shoes are too big for me. neutral

彼かれは真面目まじめすぎて、冗談じょうだんがまったく通つうじない。

kare wa majimesugite, joudan ga mattaku tsuujinai.

He is too serious — jokes go right past him. neutral

ご提示ていじいただいた納期のうきは、弊社へいしゃには短みじかすぎるかと存ぞんじます。

go teiji itadaita nouki wa, heisha ni wa mijikasugiru ka to zonjimasu.

I am afraid the proposed deadline is too tight for our company. formal

Formation

{V-masu-stem}すぎるattaches to ます-stem
高すぎる（い-adjective drops い）attaches to i-adjective
静かすぎる（na-adjective, no な）attaches to na-adjective

Variant notes

すぎ — clipped sentence-final exclamation — 高すぎ！／食べすぎ！

Notes

いい→よすぎる; ない and 無い-built compounds insert さ (なさすぎる, もったいなさすぎる) but adjectives merely ending in ない do not — 少なすぎる (少なさすぎる is a common hypercorrection). Canonically critical; colloquial hyperbole flips it into praise (おいしすぎる！).

Related patterns

Similar

ばかり
Both fault excess, but すぎる says one instance went past the proper degree (飲みすぎた — that night, too much) while てばかりいる says the act recurs to the exclusion of everything else (飲んでばかりいる) — degree versus frequency.

Lookalikes

やすい
Same masu-stem slot, different word class out — 飲みすぎる stays a verb and conjugates verbally (飲みすぎた), 飲みやすい becomes an i-adjective (飲みやすかった); parallel surface, divergent endings.
にくい
飲みにくい and 飲みすぎる share the stem but split grammatically — にくい builds an adjective judging inherent difficulty, すぎる a verb reporting an actual excess event; にくい never asserts that anything happened.