ぬか喜よろこび

noun, noun or participle which takes 'suru', intransitive verb

premature joy; short-lived elation

Refers to joy that turns out to be unfounded or too early, often used when expectations are dashed. Can be used as a noun or with する to mean 'to rejoice prematurely'.

• 合ごう格かくしたと思おもったが、ぬか喜よろこびだった。

  I thought I passed, but it was premature joy.

• ぬか喜よろこびさせてしまって、申もうし訳