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