| bewhiskered |
| blah(adjective, dull, simple, stupid, ordinary) |
| bland(adjective, dull, stupid, ordinary, boring) |
| chain(dull, flat, silly, commonplace, stale) |
| characterless |
| colorless(adjective, dull, flat, stupid, dead) |
| conventional(adjective, stupid, ordinary, commonplace, bland) |
| cornfed(adjective, stupid, ordinary, commonplace, bland) |
| dim(adjective, dull, boring, routine, tedious) |
| dime a dozen(expression, adjective, idiom, dull, boring) |
| drab(adjective, dull, stupid, boring, routine) |
| draggy(adjective, dull, simple, boring, dreary) |
| drained(dull, flat, silly, commonplace, stale) |
| dreary(adjective, dull, simple, boring, routine) |
| dryasdust |
| dull as dishwater(expression, adjective, idiom, dull, simple) |
| dumb(adjective, stupid, ordinary, commonplace, bland) |
| everyday(adjective, dull, stupid, ordinary, boring) |
| exhausted(dull, flat, silly, commonplace, stale) |
| fade |