不亦乐乎
bù​yì​lè​hū HSK7

isn't it a joy?

  1. 不亦 bù​yì
    isn't it truly
    (literary) Used to introduce a rhetorical question or emphasize a state, meaning "isn't it truly..." or "how... it is!"; often followed by 乎 hū at the end of the sentence.
  2. 乐 樂 lè noun
    pleasure
    pleasure; joy; a happy event or thing
  3. 乎 hū
    [final particle]
    (classical) used at the end of a sentence to express interrogation, doubt, surmise, or exclamation; similar to 吗 ma or 啊 a