Here's what rhymes with interdepartemental.
mental gentle dental rental lentil parental elemental judgmental judgemental fundamental continental detrimental incidental ornamental oriental placental regimental developmental governmental accidental incremental monumental sentimental supplemental temperamental occidental nonjudgmental experimental instrumental transcendental coincidental intercontinental unsentimental compartmental excremental subcontinental environmental intergovernmental nongovernmental transcontinental Words that almost rhyme with interdepartemental
temple tangential deferential penitential semble sentential torrential inessential influential assemble preferential tremble referential prudential evidential reverential dissemble presidential resemble residential exponential sequential circumferential exemple credential nonessential unessential disassemble existential providential reassemble consequential inconsequential metal mettle nettle central settle pencil methyl tensile ventral kettle medal rectal septal meddle mesial betel festal kennel petal venial fennel nestle fettle mescal vestal level several essential potential careful vessel devil differential rebel departmental peril pedal acetyl bevel dimethyl eventful pebble restful revel vengeful wrestle erectile faecal feral pestle sessile beryl interdepartmental peddle unsettle bipedal cecal shekel bezel heckle zestful headstall chestful special helpful dreadful spectral sterile ancestral healthful projectile inferential resentful treble uneventful bestial fretful imperil prayerful pubertal trestle dialectal prehensile resettle speckle utensil bedevil freckle teakettle treadle embezzle gunmetal nonmetal pretzel dishevel epithelial endothelial especial orchestral stressful neglectful palpebral revengeful unhelpful traversal primaeval unhealthful shovelful nondepartmental successful celestial confidential respectful experiential colorectal forgetful multilevel quintessential tocopherol distressful regretful suspenseful overcareful unsuccessful disrespectful nonresidential cockleshell quadrupedal