What is the Latin word for assertive?

The usual Latin words for “assertive” are aiō, affirmō. The right choice depends on the sense; see the distinctions below.

English → Latin

“assertive” in Latin

aiōto say, speak, assert, say “yes”, affirm (also in reply); to say, argue affirmōto present (something) as fixed, firm, or true; affirm, assert, maintain; to strengthen, confirm, corroborate; to make c

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

assertive

aiens (opposed to negans): [affirmativus in grammar, Diomedes]. “In a confident and assertive form,” affirmate (Cic.): affirmatissime (Gell.).

Quick answer

What is the Latin word for assertive?: The usual Latin words for “assertive” are aiō, affirmō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.