一瞬にして

いっしゅんにして

in an instant; instantly; in a moment; instantaneously

Meanings

Expression, Adverb
in an instant; instantly; in a moment; instantaneously; in the twinkling of an eye

Example sentences

驚おどろいたことにそれは一瞬いっしゅんにして姿すがたを消けした。

To my amazement, it disappeared in an instant.
苦心惨憺くしんさんたんの末すえ、考かんがえ出だした企画きかくが、会議かいぎで一瞬いっしゅんにして却下きゃっかされちゃうんだからな。

After all the trouble we went to in coming up with that project, it only took them a second to shoot it down in the meeting.