Or search: kip, wad, bale, cant, pack, pile, wisp, swag, argot, bunch, clump, lingo, sheaf, slang, jargon
2 Syllables: SU
bundled, bundles, crumble, crumpled, frontal, fumbled, funnel, grumble, humble, jumble, jungle, mongrel, mumbled, rumble, stumble, Trumbull, tumble, tunnel, uncle
3 Syllables: USU
autumnal, disgruntled, triumphal

Found 22 words across 2 groupings. Skipped 13 excess words of a similar stem.