| commonsensical(adjective, reasoning, intellectual, mental) |
| confiding(adjective, close, correct, firm, honest) |
| considered(adjective, sensible, wise, shrewd) |
| conspiratorial(sneaky, covert, secretive) |
| constant(adjective, close, correct, firm, honest) |
| constrained(careful, vague, cautious, suspicious, wary) |
| controlled(adjective, reasonable, honest, sensible, fair) |
| cost-effective(close, mean, practical, prudent, frugal) |
| crafty(smart, shrewd, clever, wary, sneaky) |
| crawling |
| creeping |
| creeping like snail(expression, idiom) |
| cunning(smart, clever, subtle, artful, sneaky) |
| curious |
| curmudgeonly(close, mean, practical, prudent, frugal) |
| dependable(adjective, close, correct, firm, honest) |
| devious(shrewd, scheming, manipulative) |
| devoted(adjective, close, correct, firm, honest) |
| dexterous(smart, shrewd, clever, subtle, artful) |
| discretionary |