Words That Rhyme With "Ethyne" :

2 syllables:

ethine, methane

4 syllables:

chloromethane, sulfonmethane

5 syllables:

diazomethane, dichloromethane, trichloromethane, triphenylmethane

6 syllables:

tetrachloromethane, tetranitromethane, triiodomethane

11 syllables:

dichlorodiphenyltrichloroethane