Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
ill-advised is an adjective meaning "without careful prior deliberation or counsel". It carries one recorded sense.
without careful prior deliberation or counsel
“ill-advised efforts”
“it would be ill-advised to accept the offer”
“took the unadvised measure of going public with the accusations”
Definitions, synonyms and semantic relations for ill-advised come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.