呆気 あっけない
akkenai

i-Adjective

1. unsatisfying; disappointing; abrupt; not enough; too quick; too short; over too soon

Usually Written in Kana
休暇 きゅうかはいつもあっけなく わる。
kyūkawa itsumo akkenakuowaru.
The holidays always end all too soon.
Other forms: