also: あんまりに
adverb
too (much); overly; excessively
Indicates that a degree or amount exceeds what is appropriate or expected. Often used with adjectives, verbs, or nouns expressing a state or action.
あまりに暑いので、エアコンをつけた。
It was so hot that I turned on the air conditioner.
彼の話はあまりに長すぎる。
His story is way too long.