| stringy(adjective, thin, spare, bare, slim) |
| subtle(dull, light, slight, fine, thin) |
| svelte(adjective, slight, fine, thin, spare) |
| sylphlike(adjective, slight, fine, thin, spare) |
| tall |
| thin(adjective, dull, light, slight, fine) |
| thin as a rail(expression, adjective, idiom, slight, thin) |
| threadlike(dull, light, slight, fine, thin) |
| twiglike(adjective, dull, light, slight, fine) |
| undernourished(adjective, dull, light, slight, fine) |
| underweight(dull, light, slight, fine, thin) |
| unfruitful(adjective, thin, spare, bare, slim) |
| unproductive(adjective, thin, spare, bare, slim) |
| walking skeleton |
| wan(dull, light, slight, fine, thin) |
| wasted(adjective, dull, light, slight, fine) |
| weedy(adjective, dull, slight, thin, delicate) |
| willowy(slight, fine, lean, narrow, little) |
| wiry(adjective, thin, spare, bare, slim) |
| wizened(adjective, dull, light, slight, fine) |