Synonyms for Trio:

n.

chant, bass, arrangement, concerto, chorus, allegro, adagio, andante, cantata, air. gamelan, dance band, consort, girl band, boy band, chamber orchestra, band, combo, ensemble, brass band. triumvirate, brace, Triunity, quintet, four, duo, couple, score, group, triune, pair, quartet, foursome, pairing. collection (noun)
ensemble.
three (noun)
triad, triumvirate, trinity, trident, triune, triangle, trimester, deltoid, leash, triplet, clover, triple, triptych, trine, troika, trilogy, tripod, ternion, three, delta, trey.
trio (noun)
leash, tierce, trinity, ternary, deuce-ace, iii, trey, terzetto, tercet, triad, 3, troika, triplet, trine, ternion, three.

Other synonyms:

III
iii.
triune, Triunity, triumvirate. Other relevant words:
iii, trey, tercet, quartet, group, leash, ensemble, 3, combo, triumvirate, band, Triunity, terzetto, ternion, quintet, trine, brass band, trinity, deuce-ace, chamber orchestra, score, ternary, triune, arrangement, duo, tierce.

Usage examples for trio

  1. For an hour the trio discussed the situation from all sides and in all its phases. – The Husbands of Edith by George Barr McCutcheon
  2. Ash was a remarkably brilliant young man, and we looked to him to supply the brains of the trio – Here and Hereafter by Barry Pain
  3. But nothing resulted except a trio of tired searchers with deep mud on their legs and a sense that Murky had eluded them again. – The Auto Boys' Mystery by James A. Braden