| direct(adjective, clear, plain, obvious, visible) |
| fathomable(adjective, understandable) |
| unequivocal(adjective, clear, simple, sharp, plain) |
| unmistakable(adjective, clear, simple, sharp, distinct) |
| apparent(adjective, clear, sharp, definite, distinct) |
| crystal clear(expression, adjective, idiom, obvious) |
| legible(adjective, simple, sharp, distinct, intelligible) |
| perspicacious(adjective, understandable) |
| self-explanatory(adjective, intelligible) |
| acute |
| clear-cut(adjective, clear, sharp, plain, obvious) |
| crisp(adjective, intelligible) |
| crystalline |
| definite(adjective, clear, simple, sharp, bright) |
| discerning(adjective, clear, sound, reasonable, sensible) |
| indisputable(adjective, understandable) |
| indubitable(adjective, understandable) |
| palpable(adjective, simple, sharp, distinct, noticeable) |
| perceptive(adjective, clear, sound, reasonable, sensible) |
| crystal(adjective, clear, simple, sharp, informal) |