| abstruse(adjective, obscure, difficult, uncertain, unclear) |
| amphibological(adjective, obscure, difficult, uncertain, unclear) |
| arcane(adjective, obscure, difficult, uncertain, unclear) |
| astigmatic(adjective, careless, foolish, stupid, thoughtless) |
| baffling(adjective, obscure, difficult, uncertain, unclear) |
| casual(adjective, random, haphazard, unfussy, indiscriminating) |
| cloddish |
| concealed(adjective, obscure, difficult, uncertain, unclear) |
| crass(adjective, hard, indifferent, unkind, unresponsive) |
| cryptic(adjective, obscure, difficult, uncertain, unclear) |
| cursory(adjective, casual, random, haphazard, unfussy) |
| difficult(adjective, obscure, uncertain, unclear, equivocal) |
| dopey(adjective, dull, insensitive, stolid, simple-minded) |
| dumb(adjective, dull, insensitive, simple-minded, dull-witted) |
| enigmatic(adjective, obscure, difficult, uncertain, unclear) |
| equivocal(adjective, obscure, difficult, uncertain, unclear) |
| foolish(adjective, careless, stupid, thoughtless, unthinking) |
| hard-boiled(adjective, hard, indifferent, unkind, unresponsive) |
| hardboiled |
| headlong(adjective, careless, foolish, stupid, thoughtless) |