| compressed |
| conceivable(adjective, reasonable) |
| conclusion |
| condensed |
| congruent(clear, sound, reasonable, sensible, rational) |
| consequent(clear, sound, reasonable, sensible, rational) |
| convictive(adjective, clear, energetic, effective, forceful) |
| convincingly |
| cool(good, suitable, acceptable, adequate, sufficient) |
| correct(good, proper, moral, valid, lawful) |
| decent(adjective, good, reasonable, honest, fair) |
| deciding(definite, precise, sure, decisive, final) |
| decisive(important, powerful, definite, precise, sure) |
| deducible(clear, sound, reasonable, sensible, rational) |
| deductive(adjective, reasonable) |
| definite(energetic, precise, sure, insistent, decisive) |
| demonstrative(definite, precise, sure, decisive, final) |
| determinant(definite, precise, sure, decisive, final) |
| determinative(sound, reasonable, rational, definite, precise) |
| diagnostic(adjective, scrupulous) |