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