THESAURUS
fifth
consecutive intervals, decimalization, decimation, degree, diapason, diatessaron, diatonic interval, diatonic semitone, enharmonic diesis, enharmonic interval, fivefold, fourth, half step, halftone, interval, less semitone, melodic interval, note, octave, parallel octaves, pentad, pentadic, pentastyle, pentavalent, quinary, quincuncial, quinquefid, quinquennial, quinquepartite, quinquepartition, quinquesection, quintuple, quintuplicate, second, semitone, seventh, sextipartition, sixth, step, tenth, third, tithe, tone, unison interval, whole step
ROGET THESAURUS
fifth
Five
N
five, five, cinque, quint, quincux, six, half-a- dozen, half dozen, seven, eight, nine, three times three, dicker, ten, decade, eleven, twelve, dozen, thirteen, long dozen, baker's dozen, quintuplet, twenty, score, twenty-four, four and twenty, two dozen, twenty-five, five and twenty, quarter of a hundred, forty, two score, fifty, half a hundred, sixty, three score, seventy, three score and ten, eighty, four score, ninety, fourscore and ten, sestiad, hundred, centenary, hecatomb, century, hundredweight, cwt, one hundred and forty-four, gross, thousand, chiliad, millennium, thousand years, grand, myriad, ten thousand, ban, man, ten thousand years, banzai, lac, one hundred thousand, plum, million, thousand million, milliard, billion, trillion, five, quinary, quintuple,
fifth, senary, sextuple, sixth, seventh, septuple, octuple, eighth, ninefold, ninth, tenfold, decimal, denary, decuple, tenth, eleventh, duodenary, duodenal, twelfth, in one's 'teens, thirteenth, vicesimal, vigesimal, twentieth, twenty-fourth, vicenary, vicennial, centuple, centuplicate, centennial, centenary, centurial, secular, hundredth, thousandth.
Quinquesection
N
quinquesection, &c, division by five, quinquesection, decimation,
fifth, quinquefid, quinquelateral, quinquepartite, quinqevalent, pentavalent, quinquarticular, octifid, decimal, tenth, tithe, duodecimal, twelfth, sexagesimal, sexagenary, hundredth, centesimal, millesimal.