nonfeasance

noun

1. a failure to act when under an obligation to do so; a refusal (without sufficient excuse) to do that which it is your legal duty to do
   Terjemahkan ke Indonesia sumber: wordnet30
2. An omission or neglect to do something, esp. that which ought to have been done. Cf. Malfeasance.
   Terjemahkan ke Indonesia sumber: webster1913