to sharpenverb/ɐˈfjaɾ/mediuma·fi·arPortuguesEnglishEspanolFrancaisDefinitionTo make something sharp or sharper, usually by grinding or friction.He sharpened the knife on a whetstone.You should sharpen your pencil before the test.synhonewhetgrindantbluntdullCommon collocationssharpen a bladesharpen a pencilsharpen one's skillsEtymologyDo latim 'affilare'.Related wordsafiadoafiaçãoafiadorafiadura