Showing results for "aerial" instead. (You can only search for 1 word at a time unless you use the Storm or Mosaic Rhyme tools)
Or search: airy, aery, flare, botany, sender, unreal, antenna, ethereal, receiver, aeriform, phytology, transmitter, insubstantial, unsubstantial
2 Syllables: SU
Ariel, barrel, burial, careful, Carol, Carroll, Gerald, Harold, Herald, Merrill, peril, prayerful, sterile
3 Syllables: USU
biennial, Centennial, Ezekiel, Fitzgerald, imperil, imperilled, malarial, perennial, terrestrial, triennial
4 Syllables: UUSU
secretarial

Found 24 words across 3 groupings. Skipped 4 excess words of a similar stem.