2 Syllables: SU
bundle, crumble, crumpled, frontal, fumbled, funnel, grumble, humble, jumble, jungles, mongrel, mumbled, rumble, stumble, Trumbull, tumble, tunnel, uncle
3 Syllables: USU
Found 21 words across 2 groupings. Skipped 14 excess words of a similar stem.