English to English

adverb (r)

• at an inconvenient time(adv.all)

  Example:
  He arrived inopportunely just as we sat down for dinner.
  

  Synonym:
  malapropos
  Antonym:
  opportunely
  

  source: wordnet30
• Not opportunely; unseasonably; inconveniently.(adverb)

  source: webster1913