Synonyms of friendly

1 Syllable
loyal, kind, fond, thick, good
2 Syllables
knightly, ducky, clubby, nicest, heartiest, duckier, benign, hearty, kindlier, close, civil, genial, chummy, kindly, cordial, deep-felt, nicer, chatty, outgoing, kindest, kinder, gracious, thoughtful, chattier, helpful, tender, homey, valuing, faithful, heartier, huggy, loving
3 Syllables
attached, peaceful, fraternal, homely, affable, complaisant, good-hearted, marshmallow, warmhearted, politest, bleeding-heart, sociable, propitious, populist, neighborly, back-slapping, peaceable, familiar, likable, backslapping, homelier, auspicious, humane, welcoming, convivial, politer, lovable, amiable, bonhomous, pacific, likeable, confiding, warm-hearted
4 Syllables
well-mannered, good-mannered, simpatico, favorable, good-natured, good-tempered, relishable, buddy-buddy, benevolent, well-disposed, sympathetic, extraverted, beneficial, amicable, conversible, glad-handering, peace-loving, peaceloving, peacemaking, placatory, attentive, hospitable, lovesome, solicitous, democratic, copacetic, receptive, comradely, extroverted
5 Syllables
accommodating, affectionate, extraversive, extroversive, conciliatory, inoffensive