Share WhatsApp Facebook Twitter Pinterest Email Sure Definition: Someone or something which is certain, trustworthy or always effective. Synonyms: Certain, Assured, Clear, Confident, Accurate Antonyms: Doubtful, Uncertain, Unsure, Wavering, Improbable 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