gerontology

noun 0.806

geriatrician

noun 0.794

geriatrics

noun 0.713

gerontocracy

noun 0.645

sociologist

noun 0.613

demographer

noun 0.606

ologist

noun 0.603

genealogist

noun 0.602

epidemiologist

noun 0.592

bacteriologist

noun 0.588

neurologist

noun 0.587

geneticist

noun 0.582

ethologist

noun 0.582

dermatologist

noun 0.579

ageist

noun 0.578

oncologist

noun 0.578

periodontist

noun 0.578

psychologist

noun 0.577

anthropologist

noun 0.575

geologist

noun 0.573

gastroenterologist

noun 0.572

nephrologist

noun 0.568

endocrinologist

noun 0.567

gynecologist

noun 0.567

microbiologist

noun 0.566

technologist

noun 0.564

glaciologist

noun 0.563

pathologist

noun 0.560

immunologist

noun 0.560

physiologist

noun 0.558

hydrogeologist

noun 0.558

urologist

noun 0.557

oldster

noun 0.557

neurophysiologist

noun 0.557

geographer

noun 0.556

octogenarian

noun 0.553

astrologist

noun 0.553

biologist

noun 0.553

geomorphologist

noun 0.553

pharmacologist

noun 0.552

biotechnologist

noun 0.552

ornithologist

noun 0.549

neuropsychologist

noun 0.548

theorist

noun 0.547

odontologist

noun 0.547

ecologist

noun 0.546

embryologist

noun 0.546

cytologist

noun 0.546

zoologist

noun 0.545

agronomist

noun 0.545

elderly

noun 0.545

virologist

noun 0.545

ethnologist

noun 0.544

hematologist

noun 0.541

eugenicist

noun 0.540

otolaryngologist

noun 0.540

oenologist

noun 0.540

histologist

noun 0.540

neurobiologist

noun 0.540

futurologist

noun 0.540

paleontologist

noun 0.539

neuropathologist

noun 0.538

bioethicist

noun 0.538

climatologist

noun 0.536

senior citizen

noun 0.536

entomologist

noun 0.536

gemologist

noun 0.535

primatologist

noun 0.534

herpetologist

noun 0.532

researcher

noun 0.532

rheumatologist

noun 0.532

neuroscientist

noun 0.532

obstetrician

noun 0.531

senior researcher

noun 0.531

theologist

noun 0.531

electrologist

noun 0.530

ophthalmologist

noun 0.530

cardiologist

noun 0.530

criminologist

noun 0.529

cytogeneticist

noun 0.529

haematologist

noun 0.529

ethnographer

noun 0.529

gynaecologist

noun 0.528

physiognomist

noun 0.527

perinatologist

noun 0.526

biostatistician

noun 0.526

etymologist

noun 0.526

internist

noun 0.526

centenarian

noun 0.525

theoretician

noun 0.525

generalist

noun 0.525

hydrologist

noun 0.525

theologian

noun 0.522

geoscientist

noun 0.521

paleoanthropologist

noun 0.520

statistician

noun 0.520

scientist

noun 0.518

nonagenarian

noun 0.517

taxonomist

noun 0.517

retiree

noun 0.517