无奈

無奈
wúnài
  1. to have no alternative
  2. frustrated
  3. exasperated
  4. helpless
  5. (conjunction) but unfortunately

CEDICT

Entry Composition

1 无 wú
  1. not to have
  2. no
  3. none
  4. not
  5. to lack
  6. un-
  7. -less
2 奈 nài
  1. used in expressions that convey frustration and futility, such as 无奈 wúnài and 莫可奈何 mòkěnàihé (literary)
  2. used for its phonetic value in writing foreign words