Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Not interesting or exciting in any way: To dull something means to take away its edge, its energy, or its excitement. Having an edge or point that is not sharp Definition of dull adjective in oxford advanced learners dictionary. Discover everything about the word dull in english: Lessen the vigor, activity, or sensitiveness of; Meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide. · dull (comparative duller, superlative dullest ) all these knives are dull. A dull , uninteresting performance; Dull suggests a lack or loss of keenness, zest, or pungency. Watching that movie will dull your senses, until you fall asleep. To dull the senses. He sat through the dull lecture and barely stayed awake. A pedestrian movie plot; You are very dull this morning, sheriff, said the youngest daughter of the house, who, being the baby and pretty, had grown pettishly privileged in speech. An uninspired lecture. A humdrum conversation; A lackluster life; · to make dull , stupid, heavy, insensible, etc. ; Not exciting or interesting boring; (of weather, sky…. The words blunt and obtuse are common synonyms of dull. A drab and boring job; A stodgy dinner party; Not clear, bright, or shiny: These adjectives mean lacking in liveliness, charm, or surprise: Dull, blunt, obtuse mean not sharp, keen, or acute. As, to dull the wits; While all three words mean not sharp, keen, or acute, dull suggests a lack or loss of keenness, zest, or pungency. A colorless and unimaginative person;