Trebled rhymes with:
abled, ambled, assembled, babbled, bobbled, bubbled, burbled, cabled, cobbled, corbelled, crumbled, dabbled, dibbled, disabled, disassembled, doubled, dribbled, enabled, enfeebled, ennobled, fabled, fumbled, gabled, gambled, garbled, gobbled, grumbled, hobbled, humbled, jumbled, labeled, labelled, libeled, marbled, mislabeled, mumbled, nibbled, rambled, reassembled, redoubled, resembled, rumbled, scrambled, scribbled, squabbled, stumbled, tabled, theobald, trembled, troubled, tumbled, unlabeled, untroubled, warbled, wobbled
Trebled sounds like:
thorvald, threefold, travelday, traveled, travelled, travolta, tripled, triplet, triplett, triviality, troubled, trueblood