Here's what rhymes with cusingly.
musingly accusingly amusingly confusingly Words that almost rhyme with cusingly
soothingly movingly approvingly reprovingly disapprovingly musically broodingly foolishly brutishly ghoulishly prudishly nudity allusively elusively rebukingly gratuity reputedly acoustically effusively inclusively abusively delusively unassumingly doohickey exclusively conclusively impunity fatuity obtrusively intrusively incongruity incredulity perpetuity unobtrusively discontinuity