| rare(adjective, weak, slight, excellent, poor) |
| uncommon(adjective, slight, excellent, thin, extraordinary) |
| unusual(adjective, excellent, extraordinary, exceptional, usual) |
| sparse(adjective, slight, thin, certain, strange) |
| occasional(adjective, slight, thin, strange, exceptional) |
| sporadic(adjective, slight, thin, unusual, strange) |
| scarce(adjective, weak, slight, excellent, poor) |
| few(adjective, unusual, strange, exceptional, special) |
| intermittent(adjective, regular, irregular, routine, unreliable) |
| scanty(adjective, weak, slight, poor, thin) |
| exceptional(adjective, excellent, extraordinary, unusual, strange) |
| singular(adjective, excellent, extraordinary, unusual, exceptional) |
| unwonted(adjective, unusual, strange, exceptional, special) |
| deficient(adjective, poor, strange, exceptional, inadequate) |
| irregular(adjective, excellent, extraordinary, unusual, special) |
| limited(adjective, strange, exceptional, inadequate, valuable) |
| odd(adjective, excellent, extraordinary, unusual, strange) |
| scant(adjective, weak, slight, poor, thin) |
| seldom(adjective, adverb, slight, unusual, strange) |
| exiguous(adjective, slight, poor, thin, inferior) |