five-hundredth

noun 0.772

quinquennial

noun 0.738

quinquennium

noun 0.691

quadricentennial

noun 0.677

sesquicentennial

noun 0.671

cinquecento

noun 0.660

quintuple

noun 0.625

quintuplicate

noun 0.612

quattrocento

noun 0.611

quintic

noun 0.607

centenary

noun 0.604

half-century

noun 0.602

quin

noun 0.600

bicentenary

noun 0.593

tercentenary

noun 0.592

fiftieth

noun 0.580

quarter-century

noun 0.580

fifth

noun 0.578

quint

noun 0.577

quintet

noun 0.576

fifteenth

noun 0.575

quinta

noun 0.570

cinque

noun 0.567

bicentennial

noun 0.550

golden jubilee

noun 0.547

quintain

noun 0.542

tricentennial

noun 0.542

quinze

noun 0.539

centennial

noun 0.535

quince

noun 0.531

pentad

noun 0.531

quinary

noun 0.530

quintuplet

noun 0.521

quadrennial

noun 0.514

silver jubilee

noun 0.513

cinquain

noun 0.511

string quintet

noun 0.506

number five

noun 0.500