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