Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun assertion

2 senses of assertion

Sense 1
assertion, averment, asseveration -- (a declaration that is made emphatically (as if no supporting evidence were necessary))
       => declaration -- (a statement that is emphatic and explicit (spoken or written))

Sense 2
affirmation, assertion, statement -- (the act of affirming or asserting or stating something)
       => speech act -- (the use of language to perform some act)