| cognizant(adjective, happy, welcome, joyful, satisfied) |
| complacency |
| complaisant(mild, relaxed, courtesy, tolerant, laid-back) |
| composed(adjective, calm, cool, solid, mild) |
| conciliatory(courtesy, easygoing, compliant, peace-loving) |
| condescending |
| congenial(adjective, close, friendly, cordial, tight) |
| contemptuous |
| contend(adjective, content) |
| convenient(adjective, secure, soft, pleasant, easy) |
| conversable(adjective, close, friendly, familiar, cordial) |
| convivial(adjective, close, friendly, familiar, cordial) |
| cool(adjective, calm, quiet, gentle, solid) |
| cool as cucumber(expression, adjective, idiom, calm, cool) |
| cordial(adjective, close, friendly, tight, genial) |
| cozy(adjective, close, secure, soft, pleasant) |
| cozy with(expression, adjective, close, friendly, familiar) |
| delicious(adjective, happy, welcome, joyful, satisfied) |
| delighted(adjective, happy, welcome, joyful, satisfied) |
| devil-may-care(mild, relaxed, tolerant, laid-back, permissive) |