| rocky(adjective, health, weak, thin, uncertain) |
| shaky(adjective, weak, thin, delicate, uncertain) |
| slight(adjective, weak, thin, delicate, shaky) |
| spiritless(adjective, dull, weak, heavy, still) |
| tired |
| valetudinary |
| worn out |
| achromatic(dull, flat, pale, white, drab) |
| achromic(dull, flat, pale, white, drab) |
| ashy(adjective, dull, light, soft, flat) |
| below par(expression, adjective, weak, ill, sick) |
| bilious(adjective, weak, thin, anxious, ill) |
| blanched(adjective, dull, light, soft, flat) |
| cranky(adjective, weak, thin, ill, sick) |
| decayed |
| decrepitly(adverb, feebly, pathologically) |
| dim(adjective, dull, light, soft, poor) |
| discolored(dim, white, colorless, pallid, ashen) |
| disease(noun, weakness) |
| doddering(adjective, weak, thin, delicate, feeble) |