sexagenarian

noun 0.756

octogenarian

noun 0.715

seventieth

noun 0.680

nonagenarian

noun 0.674

septenary

noun 0.632

sixtysomething

noun 0.609

seventy-seventh

noun 0.604

seventy-first

noun 0.589

seventy-second

noun 0.573

seventy-third

noun 0.566

sixty-ninth

noun 0.564

senior citizen

noun 0.558

seventeenth

noun 0.549

seventh

noun 0.548

seventy-ninth

noun 0.546

centenarian

noun 0.546

geezer

noun 0.540

70s

noun 0.531

oldster

noun 0.529

elderly

noun 0.527

seventy-fifth

noun 0.526

codger

noun 0.523

septet

noun 0.513

gerontologist

noun 0.510

seventy-fourth

noun 0.506

eighty-seventh

noun 0.505

senior

noun 0.504

fiftysomething

noun 0.504

sixty-eighth

noun 0.503

seventy-sixth

noun 0.503

sept

noun 0.503