sharp 27 antonyms and opposites of sharp. Adj — Having a fine edge or point that can cut or pierce easily. Synonyms for sharp on the dot precisely Antonyms for sharp blunt dull dim dim-witted slow slow-witted thick flat bland insipid tasteless above-board honest legit legitimate reputable inaccurate imprecise complimentary flattering friendly kind nice inelegant scruffy shabby unobservant ← Back to the full definition of sharp