於戲

於戏
wūhū
  1. (archaic and obsolete) ah; o; la; lo; alas; alack; well (onomatopoeic of sighing and signifying relief, closure, emphasis, admiration, calling to attention, or sadness, etc.)
  2. ah; o; la; lo; alas; alack; well (onomatopoeic of sighing and signifying relief, closure, emphasis, admiration, calling to attention, or sadness, etc.)

Wiktionary

Entry Composition

=1 於 yú
  1. (of time or place) in; at; on
  2. (indicating any indirect relation) to; toward; vis-à-vis; with regard to; for
  3. (indicating a source) from; out of
  4. (used in comparison) than
  5. (used in the passive voice) by
=1 於 Yū
  1. surname Yu
  2. Taiwan pr. Yú
=1 於 wū
  1. (literary) Oh!
  2. Ah!
=2 戲 xì
  1. trick
  2. drama
  3. play
  4. show

classifiers: 齣, 場, 臺
=2 戲 hū alternative form of 呼 (“to shout”), used in 於戲／於戏 (wūhū)
=2 戲 xī
  1. (obsolete) slanting; steep
  2. Used in place names.
  3. alternative form of 羲 (xī), used in 伏戲／伏戏
  4. slanting; steep
=2 戲 yī only used in 戲氏阪／戏氏阪