| restrict(verb, stop, control, reduce, restrain) |
| stem(verb, stop, control, block, staunch) |
| stiff(adjective, dull, heavy, boring, sluggish) |
| stodgy |
| suppress(verb, stop, control, dull, quiet) |
| wane(verb, stop, control, dull, restrain) |
| weary(verb, adjective, upset, trouble, dull) |
| wooden(adjective, dull, uncertain, boring, hesitant) |
| balk |
| blah(adjective, dull, quiet, weak, easy) |
| boneheaded(adjective, stupid, impulsive, impractical, half-baked) |
| circumspect(unenthusiastic, unwilling, disinclined) |
| comatose(adjective, dull, quiet, weak, easy) |
| cool(verb, adjective, stop, calm, control) |
| dallying(adjective, dull, careless, indifferent, idle) |
| dawdle(verb, fail, diminish, decrease, wane) |
| deaden(verb, dull, quiet, diminish, stifle) |
| die away(verb, expression, phrasal verb, moderate, yield) |
| down(adjective, dull, increase, heavy, idle) |
| draggy(adjective, dull, quiet, flat, heavy) |