| impressive(reasonable, solid, belief, realistic, authentic) |
| just(adjective, good, close, open, direct) |
| ostensible(adjective, reasonable, fair, acceptable, expected) |
| perchance(adverb, perhaps, possibly, maybe, presumptively) |
| powerful(good, sound, right, reasonable, solid) |
| principled(adjective, open, honest, sensible, solid) |
| promising(reasonable, expected, apt, likely, hopeful) |
| ready-made |
| reasoned(adjective, sound, sensible, rational, intelligent) |
| renown |
| reputable |
| responsible(adjective, open, honest, sensible, solid) |
| safe |
| sane(adjective, sound, sensible, rational, intelligent) |
| stable(adjective, reasoning, intellectual, mental) |
| substantial(good, sound, right, reasonable, rational) |
| supposable(adjective, reasonable, fair, acceptable, realistic) |
| truthful(adjective, close, open, correct, honest) |
| verisimilar(adjective, reasonable, fair, acceptable, expected) |
| viable(adjective, sound, reasonable, rational, likely) |