N. periodicity, intermittence, beat, oscillation, pulse, pulsation, rhythm, alternation, alternateness, alternativeness, alternity, bout, round, revolution, rotation, turn, say, anniversary, jubilee, centenary, catamenia, courses, menses, menstrual flux, rota, cycle, period, stated time, routine, days of the week, sunday, monday &c, months of the year, january &c, feast, fast &c, christmas, easter, new year's day &c. allhallows, allhallowmas, all saints' day, all souls', all souls' day, ash wednesday, bicentennial, birthday, bissextile, candlemas, dewali, groundhog day, halloween, hallowmas, lady day, leap year, midsummer day, muharram, woodchuck day, st. swithin's day, natal day, yearbook, yuletide, punctuality, regularity, steadiness

V. recur in regular order, recur in regular succession, return, revolve, come again, come in its turn, come round, come round again, beat, pulsate, alternate, intermit

Adj. periodic, periodical, serial, recurrent, cyclical, rhythmical, recurring, intermittent, remittent, alternate, every other, hourly, diurnal, daily, quotidian, tertian, weekly, hebdomadal|, hebdomadary|, biweekly, fortnightly, bimonthly, catamenial|, monthly, menstrual, yearly, annual, biennial, triennial, &c, centennial, secular, paschal, lenten, &c. regular, steady, punctual, regular as clockwork

Adv. periodically, at regular intervals, at stated times, at fixed established, at established periods, punctually, de die in diem, from day to day, day by day, by turns, in turn, in rotation, alternately, every other day, off and on, ride and tie, round and round

N. perseverance, continuance, permanence, firmness, constancy, steadiness, singleness of purpose, tenacity of purpose, persistence, plodding, patience, sedulity, pertinacy|, pertinacity, pertinaciousness, iteration bottom, game, pluck, stamina, backbone, grit, indefatigability, indefatigableness, bulldog courage

V. persevere, persist, hold on, hold out, die in the last ditch, be in at the death, stick to, cling to, adhere to, stick to one's text, keep on, keep to one's course, keep to one's ground, maintain one's course, maintain one's ground, go all lengths, go through fire and water, bear up, keep up, hold up, plod, stick to work, continue, follow up, die in harness, die at one's post

Adj. persevering, constant, steady, steadfast, undeviating, unwavering, unfaltering, unswerving, unflinching, unsleeping, unflagging, undrooping, steady as time, unrelenting, unintermitting, unremitting, plodding, industrious, strenuous, pertinacious, persisting, persistent, solid, sturdy, staunch, stanch, true to oneself, unchangeable, unconquerable, indomitable, game to the last, indefatigable, untiring, unwearied, never tiring

Adv. through evil report and good report, through thick and thin, through fire and water, per fas et nefas, without fail, sink or swim, at any price, vogue la galere

Phr. never say die, give it the old college try, vestigia nulla retrorsum, aut vincer aut mori, la garde meurt et ne se rend pas, tout vient a temps pour qui sait attendre