20 Letter Words (ENABLE)
| ACETYLCHOLINESTERASE | ADRENOCORTICOSTEROID |
| ADRENOCORTICOTROPHIC | ADRENOCORTICOTROPHIN |
| ADRENOCORTICOTROPINS | ANTHROPOCENTRICITIES |
| ANTHROPOMORPHIZATION | ANTIAUTHORITARIANISM |
| ANTICONSERVATIONISTS | ANTIFLUORIDATIONISTS |
| BACTERIOCHLOROPHYLLS | BUCKMINSTERFULLERENE |
| CHEMOTHERAPEUTICALLY | CHLOROFLUOROMETHANES |
| COMPARTMENTALIZATION | COMPREHENSIBLENESSES |
| CONTRADISTINGUISHING | CONVENTIONALIZATIONS |
| COUNTERCONDITIONINGS | COUNTERDEMONSTRATING |
| COUNTERDEMONSTRATION | COUNTERDEMONSTRATORS |
| COUNTERINTELLIGENCES | COUNTERMOBILIZATIONS |
| COUNTERREVOLUTIONARY | COUNTERSURVEILLANCES |
| COUNTERTRANSFERENCES | CRYSTALLOGRAPHICALLY |
| CYTODIFFERENTIATIONS | DEHYDROCHLORINATIONS |
| DEINDUSTRIALIZATIONS | DEINSTITUTIONALIZING |
| DEOXYRIBONUCLEOTIDES | DEPARTMENTALIZATIONS |
| DIMETHYLNITROSAMINES | DISTINGUISHABILITIES |
| ELECTROCARDIOGRAPHIC | ELECTROENCEPHALOGRAM |
| ELECTROLUMINESCENCES | ELECTROOCULOGRAPHIES |
| ELECTROPHOTOGRAPHIES | ELECTROPHYSIOLOGICAL |
| ELECTROPHYSIOLOGISTS | ELECTRORETINOGRAPHIC |
| ENCEPHALOMYOCARDITIS | EXISTENTIALISTICALLY |
| EXPRESSIONLESSNESSES | EXTEMPORANEOUSNESSES |
| FORETHOUGHTFULNESSES | GLOMERULONEPHRITIDES |
| HISTOCOMPATIBILITIES | HOMOTRANSPLANTATIONS |
| HYDROCHLOROTHIAZIDES | HYPERCHOLESTEROLEMIA |
| HYPERCHOLESTEROLEMIC | HYPERCOAGULABILITIES |
| HYPERCONSCIOUSNESSES | HYPERPARATHYROIDISMS |
| HYPERSENSITIVENESSES | IMMUNOCYTOCHEMICALLY |
| IMMUNOHISTOCHEMISTRY | IMMUNOPRECIPITATIONS |
| INAPPRECIATIVENESSES | INCOMMENSURABILITIES |
| INCOMPREHENSIBLENESS | INCONSEQUENTIALITIES |
| INCONSIDERABLENESSES | INDESTRUCTIBLENESSES |
| INDISCRIMINATENESSES | INDISTINGUISHABILITY |
| INSTITUTIONALIZATION | INTELLECTUALIZATIONS |
| INTERCHANGEABILITIES | INTERCONNECTEDNESSES |
| INTERNATIONALIZATION | INTERSTRATIFICATIONS |
| IRRECONCILABLENESSES | IRREPROACHABLENESSES |
| KERATOCONJUNCTIVITES | KERATOCONJUNCTIVITIS |
| LYMPHOGRANULOMATOSES | LYMPHOGRANULOMATOSIS |
| MAGNETOFLUIDDYNAMICS | MAGNETOHYDRODYNAMICS |
| MICROCRYSTALLINITIES | MICROELECTROPHORESES |
| MICROELECTROPHORESIS | MICROELECTROPHORETIC |
| MICROMINIATURIZATION | MICROPALEONTOLOGICAL |
| MICROPALEONTOLOGISTS | MICROPHOTOMETRICALLY |
| MISCHARACTERIZATIONS | NEUROENDOCRINOLOGIES |
| NEUROENDOCRINOLOGIST | NEUROPHARMACOLOGICAL |
| NEUROPHARMACOLOGISTS | NEUROPHYSIOLOGICALLY |
| NEUROPSYCHIATRICALLY | NONDENOMINATIONALISM |
| NONDESTRUCTIVENESSES | NONINSTITUTIONALIZED |
| OVERDIFFERENTIATIONS | OVERENTHUSIASTICALLY |
| OVERINTELLECTUALIZED | OVERINTELLECTUALIZES |
| OVERPROTECTIVENESSES | PALEOANTHROPOLOGICAL |
| PALEOANTHROPOLOGISTS | PARADICHLOROBENZENES |
| PARATHYROIDECTOMIZED | PHENYLPROPANOLAMINES |
| PHENYLTHIOCARBAMIDES | PHILOPROGENITIVENESS |
| PHOSPHATIDYLCHOLINES | PHOSPHOENOLPYRUVATES |
| PHOSPHOFRUCTOKINASES | PHOSPHOMONOESTERASES |
| PHOTOAUTOTROPHICALLY | PHOTODISINTEGRATIONS |
| PHOTOINTERPRETATIONS | PHOTOPHOSPHORYLATION |
| PHOTORECONNAISSANCES | PLETHYSMOGRAPHICALLY |
| POLYPHILOPROGENITIVE | PROFESSIONALIZATIONS |
| PSEUDOCHOLINESTERASE | PSEUDOPARENCHYMATOUS |
| PSEUDOSOPHISTICATION | PSYCHOPATHOLOGICALLY |
| PSYCHOPHARMACOLOGIES | PSYCHOPHARMACOLOGIST |
| RADIOIMMUNOASSAYABLE | RADIOPHARMACEUTICALS |
| RECONCEPTUALIZATIONS | REINDUSTRIALIZATIONS |
| REINSTITUTIONALIZING | REPRESENTATIONALISMS |
| REPRESENTATIONALISTS | REPRESENTATIVENESSES |
| ROENTGENOGRAPHICALLY | SEMIAUTOBIOGRAPHICAL |
| SPECTROFLUOROMETRIES | SPECTROHELIOGRAPHIES |
| SPECTROPHOTOMETRICAL | SUPERSPECIALIZATIONS |
| SYNCATEGOREMATICALLY | TETRAHYDROCANNABINOL |
| TRANSFORMATIONALISTS | ULTRACENTRIFUGATIONS |
| ULTRAMICROSCOPICALLY | ULTRAREVOLUTIONARIES |
| ULTRASEGREGATIONISTS | UNCHARACTERISTICALLY |
| UNCOMPROMISINGNESSES | UNCONSCIONABLENESSES |
| UNDERREPRESENTATIONS | UNINTELLIGIBLENESSES |
| UNREPRESENTATIVENESS | UNSATISFACTORINESSES |