centennial

adj 0.754

nonagenarian

adj 0.691

hundredth

adj 0.672

tricentennial

adj 0.653

centesimal

adj 0.651

centum

adj 0.635

bicentennial

adj 0.617

tercentenary

adj 0.616

sesquicentennial

adj 0.585

octogenarian

adj 0.584

hundred-thousandth

adj 0.568

hundredfold

adj 0.563

septuagenarian

adj 0.548

quadricentennial

adj 0.546

decennial

adj 0.544

millionth

adj 0.542

ninety-ninth

adj 0.541

geriatric

adj 0.535

sexagenarian

adj 0.533

age-old

adj 0.528

billionth

adj 0.526

centimetric

adj 0.525

zillionth

adj 0.525

millennial

adj 0.524

quincentenary

adj 0.523

elderly

adj 0.522

ageless

adj 0.519

101

adj 0.518

seventieth

adj 0.518

ninety-seventh

adj 0.515

thousandth

adj 0.515

one-year-old

adj 0.510

trillionth

adj 0.508

ten-thousandth

adj 0.508

for the ages

adj 0.507

centuriate

adj 0.505

five-hundredth

adj 0.503

aging

adj 0.503

gerontological

adj 0.502

aged

adj 0.502

antique

adj 0.501

decade-long

adj 0.500