一斉
N2いっせい
[isei]
Definitions
1.adverb (fukushi); noun (common) (futsuumeishi)
simultaneous; all at once
Example Sentences
花火が上がった瞬間、観客が一斉に歓声を上げた。
The moment the fireworks went up, the audience cheered all at once.
先生の合図で生徒たちが一斉に立ち上がった。
At the teacher's signal, the students all stood up at once.
選挙結果が発表されて報道陣が一斉に動き出した。
When the election results were announced, the press all moved at once.