trivial

a.无价值的；不重要的

tripe, triple, triplet, triplicate, triply, tripod, tripper, tripping, trippingly, triptych, trisect, trisection, trite, triumph, triumphal, triumphant, triumphantly, triumvirate, trivet, trivia, triviality, trivialization, trivialisation, trivialize, trivialize, trivialise, trivially, trod, trodden, troglodyte, troika, Trojan, Trojan horse, troll, trolley, trolley bus, trollop, trombone, trombonist, troop, troop-ship, trooper,