Words That Rhyme With "Additional" :
3 syllables:
biphenyl, fictional, frictional, national, notional, passional, rational, trigonal, visional
4 syllables:
antiphonal, binational, collisional, concessional, conditional, confessional, congressional, depreciable, devotional, discretional, divisional, emotional, irrational, nutritional, obsessional, polygonal, precessional, processional, professional, promotional, provisional, recessional, relational, rotational, sensational, suspicional, traditional, transitional, transnational, unnational, vocational
5 syllables:
aberrational, cataclysmal, compositional, computational, conformational, confrontational, congregational, connotational, constitutional, conversational, depositional, educational, generational, gravitational, ideational, illustrational, informational, inspirational, institutional, international, intranational, intuitional, invitational, involutional, irrotational, motivational, multinational, navigational, nonprofessional, nontraditional, occupational, operational, presentational, prevocational, progestational, recreational, situational, supernational, superrational, supranational, suprarational, transformational, unconditional, unemotional, unprofessional, unsensational, untraditional
6 syllables:
coeducational, denominational, extraprofessional, improvisational, interconfessional, investigational, organizational, paraprofessional, representational, semiprofessional, stratificational, unconstitutional
7 syllables:
intergenerational, nonrepresentational