septuagenarian

adj 0.763

sixties

adj 0.691

octogenarian

adj 0.650

sixtieth

adj 0.648

sexagesimal

adj 0.628

nonagenarian

adj 0.620

sextic

adj 0.620

sixty-ninth

adj 0.604

sixty-eighth

adj 0.590

sixty-second

adj 0.589

sixty-fourth

adj 0.584

sixty-fifth

adj 0.580

sextuple

adj 0.576

sextile

adj 0.570

sixth

adj 0.554

eighty-sixth

adj 0.542

middle-aged

adj 0.538

centenarian

adj 0.533

fifty-sixth

adj 0.527

seventieth

adj 0.525

seventy-sixth

adj 0.522

senescent

adj 0.520

thirtysomething

adj 0.519