不了

bùle
no thanks (used to politely but informally decline)

CEDICT

Homographs

不了 bùliǎo
  1. (as a resultative verb suffix) unable to (do sth)
  2. (pattern: {verb} + 個 ge + ~) without end; incessantly

Entry Composition

1 不 bù
  1. no; not so
  2. (bound form) not; un-
2 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)