octogenarian

noun 0.795

centenarian

noun 0.682

septuagenarian

noun 0.674

sexagenarian

noun 0.613

ninetieth

noun 0.594

eighty-ninth

noun 0.554

ninety-ninth

noun 0.552

nonane

noun 0.551

nonet

noun 0.551

nonamer

noun 0.540

senior citizen

noun 0.537

oldster

noun 0.534

eightieth

noun 0.531

sixtysomething

noun 0.528

ninety-second

noun 0.524

elderly

noun 0.520

seventy-ninth

noun 0.519

ninety-seventh

noun 0.518

gerontologist

noun 0.517

ninth

noun 0.511

nineteenth

noun 0.510

old woman

noun 0.509

novena

noun 0.508

ninety-third

noun 0.502

nonagon

noun 0.502