| companionable(adjective, pleasant, friendly, agreeable, suitable) |
| compatible(adjective, pleasant, friendly, agreeable, suitable) |
| complaisant(pleasant, friendly, agreeable, cordial, gracious) |
| complementary(adjective, like, suitable, parallel, consistent) |
| concurrent(adjective, like, even, similar, identical) |
| congenerous |
| congruous(adjective, pleasant, like, friendly, agreeable) |
| connections |
| consanguinean |
| consistent(adjective, pleasant, friendly, agreeable, suitable) |
| consonant(adjective, pleasant, like, friendly, agreeable) |
| conversable(pleasant, friendly, agreeable, cordial, gracious) |
| cooperative(adjective, pleasant, friendly, agreeable, suitable) |
| correlation(connection, link, association, relation, relationship) |
| correspondent(adjective, like, even, parallel, consistent) |
| cousin(noun, relative) |
| cousinhood |
| cousinship |
| dead ringer(expression, adjective, like, even, similar) |
| delightful(pleasant, friendly, agreeable, cordial, gracious) |