Allene rhymes with:
abilene, acetylene, acrolein, aniline, arlene, carlene, darleen, darlene, dryclean, ellene, ethylene, evaleen, gasoline, kathlene, magdalene, marlene, maybelline, mescaline, methylene, naphthalene, nutriclean, opaline, orlene, polyacetylene, polybutylene, polyethylene, polypropylene, sharlene, tourmaline, valvoline, vaseline
Allene sounds like:
ahlen, ahlin, ahlman, aileen, alaimo, alain, alaine, alam, alamein, alamo, alan, alana, alane, alann, alanna, alayne, aleen, alem, aleman, alena, alene, alenia, alewine, aliano, alien, alihan, alima, alimony, alina, aline, allain, allan, alleman, allen, alleyne, allin, allman, allmon, allum, allyn, alm, alma, alman, almay, almo, almon, almy, alon, alone, aloni, alum, alumina, aluminio, aluminium, aluminum, alumna, alumnae, alumni, alun, alwin, alwine, alwyn, aulana, aylwin