| accomplice | associate, partner, aide |
| associate | companion, fellow-traveller |
| associate | accompany, escort, join with |
| book-mate | fellow-student, scholarly associate |
| companion | associate, aide, comrade |
| company | companion, associate, comrade |
| compartner | associate, partner |
| compeer | companion, associate, fellow |
| competitor | partner, associate, colleague |
| complice | accomplice, confederate, associate |
| consort | companion, partner, associate |
| converse | associate, keep company |
| corrival | ally, associate, partner |
| engage | involve in, associate with |
| familiar | close friend, intimate associate |
| fellow | companion, associate |
| insociable | intolerable, impossible to associate with |
| join | ally, unite, associate |
| kiss | fraternize, associate, consort |
| mate | companion, associate, comrade |
| mell | get involved, associate, copulate |
| partaker | ally, supporter, associate |
| partner | associate, equate, match |
| pew-fellow | one who shares a church bench; companion, associate |
| rival | partner, associate, companion |
| sort | associate, keep company with |
| yoke | associate, link, join, couple |
| yoke-devil | companion-devil, associate in evil |