Here is a list of nouns that start with TRI.
triad, trial, triamcinolone, triangle, tribe
tribesmen, tribulation, tribunal, tribute, trick
trickle, trickster, tricolor, trifle, trill
trilogy, trim, trimester, trimming, trinket
trio, triol, trip, triphenylarsine, triphenylphosphine
triphenylstibine, triphosphopyridine, triple, triplet, triplication
tripod, tripolyphosphate, triptych, triservice, trisodium
triumph, trivia, triviality
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