悵然若失

怅然若失
chàngránruòshī

to feel despondent; to be downhearted

Wiktionary

Entry Composition

1 悵然 chàngrán disappointed and frustrated
=2 若 rě
  1. used in 般若 bōrě
  2. used in 蘭若 lánrě
=2 若 ruò
  1. to seem
  2. like
  3. as
  4. if
=3 失 shī
  1. to lose
  2. to miss
  3. to fail
=3 失 yì
  1. alternative form of 佚 (“to ignore; indulgent”)
  2. alternative form of 逸 (yì, “to flee; to run away”)