Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
baneful is an adjective meaning "exceedingly harmful". It carries 2 recorded senses.
exceedingly harmful
Definitions, synonyms and semantic relations for baneful come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.