Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
negativist is a noun meaning "someone who refuses to do what is asked or does the opposite of what is asked". It carries 2 recorded senses.
someone who refuses to do what is asked or does the opposite of what is asked
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for negativist come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.