Synonyms for triad

the cardinal number that is the sum of one and one and one (noun)

• three
• 3
• iii
• trio
• threesome
• tierce
• leash
• troika
• trine
• trinity
• ternary
• ternion
• triplet
• tercet
• terzetto

a set of three similar things considered as a unit (noun)

• triple

a three-note major or minor chord (noun)