also: すゆ
noun, adverb
Literary word for a very short time; similar to しばらく but more formal and rare. Often used in classical or poetic contexts.
See also: 暫く (しばらく)
須臾の間も忘れられない。
I cannot forget it even for a moment.
須臾にして状況は一変した。
In an instant, the situation changed completely.
Obsolete reading; included for recognition of historical texts.
しばらく is the common word for 'a while' or 'for some time', used in everyday speech. 須臾 is a rare literary synonym for a very short moment.
From classical Chinese, where 須臾 means a very short time. The reading しゅゆ is the standard Sino-Japanese reading; すゆ is an older variant.