adjective
- superlative form of dull: most lacking in interest or excitement; most boring
- superlative form of dull: most lacking sharpness or brightness
Examples
- That was the dullest movie I’ve ever seen.
- Math class is the dullest part of my day.
- This is the dullest knife in the drawer.
- The dullest colors were chosen for the office walls.
- He gave the dullest speech at the conference.
- The dullest student suddenly became interested in science.