Showing results for "amaranth" instead. (You can only search for 1 word at a time unless you use the Storm or Mosaic Rhyme tools)
Or search: herb, pigweed, caryopsis
3 Syllables: SUU
Amsterdam, avalanche, caravan
4 Syllables: USUU
Afghanistan

Found 4 words across 2 groupings. Skipped 1 excess word of a similar stem.