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