Synonyms of companion in English:

companion


See US English definition of companion

See UK English definition of companion

See Spanish definition of compañero

noun

1‘Harry and his companion settled down at a table’

SYNONYMS
associate, partner, escort, consort, colleague, workmate, co-worker, compatriot, confederate, ally
friend, intimate, confidant, confidante, comrade
confrère
informal buddy, pal, chum, crony, cully, spar, sidekick
British informal mate, oppo, china, mucker
Northern English informal marrow, marrer, marra
North American informal amigo, compadre, paisan
North American, South African informal homeboy, homegirl
South African informal gabba
Australian, New Zealand informal offsider
archaic compeer
rare consociate

2‘a lady's companion’

SYNONYMS
attendant, aide, helper, assistant, personal assistant, valet, equerry, squire, lady in waiting
chaperone, duenna, protector, protectress
British carer, minder
informal sidekick

3‘the CD is intended as a companion to their recent hit’

SYNONYMS
complement, counterpart, fellow, mate, twin, other half, match
accompaniment, supplement, addition, adjunct, appendage, accessory, auxiliary

4‘The Cottage Gardener's Companion’

SYNONYMS
handbook, manual, guide, reference book, instruction book, ABC, primer
vade mecum
informal bible
rare enchiridion