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