Words That Rhyme With "Decennially" :
4 syllables:
cranially, enviously, lineally, menially, plenteously
5 syllables:
biennially, centennially, colonially, compendiously, millennially, perennially, quadrennially, septennially, sexennially
6 syllables:
bicentennially, ceremonially, interlineally, matrilineally, matrimonially, patrilineally, semiannually