| unsharpened(adjective, dull, sharp, flat, round) |
| unsophisticated(adjective, artless) |
| abate(verb, calm, dull, quiet, check) |
| attenuate(verb, stop, dull, hurt, ruin) |
| austere(adjective, hard, severe, plain, cold) |
| bare(adjective, simple, unadorned) |
| bearish(adjective, hard, open, direct, tough) |
| blunted(adjective, dull, flat, round, rounded) |
| blur(verb, deaden) |
| broad(adjective, artless) |
| cold(adjective, hard, severe, austere, unadorned) |
| edgeless(adjective, dull, sharp, flat, round) |
| enervate(verb, stop, hurt, ruin, restrain) |
| flat(adjective, physical inertness) |
| hebetate(verb, dull, surprise, astonish, astound) |
| indelicate(adjective, hard, tough, harsh, rude) |
| naive(adjective, open, direct, free, easy) |
| quench(verb, calm, satisfy, soothe, pacify) |
| repress(verb, dull, quiet, diminish, abate) |
| stun(verb, dull, quiet, develop, diminish) |