Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
asseverator is a noun meaning "someone who claims to speak the truth". It carries one recorded sense.
someone who claims to speak the truth
“a bold asserter”
“a declarer of his intentions”
“affirmers of traditional doctrine”
“an asseverator of strong convictions”
“an avower of his own great intelligence”
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 asseverator come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.