Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unperceived is an adjective meaning "not perceived or commented on". It carries one recorded sense.
not perceived or commented on
Definitions, synonyms and semantic relations for unperceived come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.