Here's what rhymes with sentimentality.
centrality plurality immorality instrumentality temporality banality eventuality bestiality immortality punctuality venality personality originality impartiality illegality materiality mutuality principality emotionality informality marginality speciality technicality individuality rationality functionality criminality intentionality conventionality collegiality seasonality immateriality artificiality superficiality unconventionality proportionality heterosexuality constitutionality unconstitutionality Words that almost rhyme with sentimentality
mendacity tacitly panicky passively tenacity veracity validly impassively invalidly passingly radically emphatically sanctity lavishly savagely tragically laughingly massively placidly statically pugnacity enchantingly waggishly abashedly mannishly raffishly caddishly humanity drastically mechanically dynamically graphically candidly classically sporadically casuistry handedly pertinacity ecstatically erratically nostalgically slavishly unabashedly lastingly pneumatically snappishly inactively irascibly operatically prancingly automatically dramatically organically schematically attractively dogmatically fantastically thematically interactively proactively enigmatically expansively emblematically telepathically outlandishly slantingly bombastically exactingly inorganically unflaggingly aromatically monastically gymnastically rheumatically systematically democratically distractedly everlastingly outstandingly understandingly climatically demographically ethnographically symptomatically aerodynamically autocratically biographically chromatically idiomatically offhandedly thermostatically phlegmatically evenhandedly unattractively acrobatically highhandedly underhandedly enthusiastically sarcastically diplomatically photographically retroactively topographically radioactively melodramatically scholastically typographically telegraphically pornographically bureaucratically ecclesiastically problematically axiomatically idiosyncratically orthographically aristocratically autobiographically lithographically bibliographically