noun-modifying (irregular)
too early; premature; untimely
Used when something happens before the expected or appropriate time. Can refer to events, actions, or even death. The すぎる part adds the meaning of 'too much'.
See also: 過ぎる (すぎる)
彼の死は早すぎた。
His death was premature.
まだ準備ができていないのに、出発するのは早すぎる。
It's too early to leave when we're not ready yet.
早い simply means 'early' or 'fast', while 早すぎる adds the nuance of 'too early' or 'excessively early'.
過ぎる is a suffix meaning 'too much' or 'to exceed'. 早すぎる is a compound of 早い + すぎる.
Compound of 早い (early) + すぎる (to exceed, too much). The すぎる part is a common suffix attached to the stem of adjectives to express excess.