Share WhatsApp Facebook Twitter Pinterest Email Certain Definition: absolutely sure of something Synonyms: Positive, Definite, Indisputable, Sure, Actual Antonyms: Doubtful, Indefinite, Disputable, Uncertain, Ambiguous, Equivocal 0 Related Posts Abandon – Definition, Synonyms and Antonym December 26, 2021 Abash – Definition, Synonyms and Antonym December 26, 2021 Abbreviate – Definition, Synonyms and Antonym December 26, 2021 Write A Comment Cancel Reply Save my name, email, and website in this browser for the next time I comment. Δ