Showing results for "sickness" instead. (You can only search for 1 word at a time unless you use the Storm or Mosaic Rhyme tools)
Or search: bends, qualm, malady, nausea, anuria, illness, symptom, toxemia, collapse, toxaemia, anuresis, kinetosis, saturnism, queasiness, unwellness
2 Syllables: SU
biggest, bigness, citrus, fitness, fittest, hideous, igneous, mixes, Nicholas, nitrous, piteous, prettiest, quibus, quickness, strictest, strictness, swiftness, thickness, vitreous, witness
3 Syllables: USU
amphibious, assiduous, enigmas, eyewitness, fastidious, insidious, invidious, Mauritius, perfidious, unfitness

Found 30 words across 2 groupings. Skipped 1 excess word of a similar stem.