duration

age; oldness; old age, advanced age, golden years; senility, senescence; years, anility, gray hairs, climacteric, grand climacteric, declining years, decrepitude, hoary age, caducity, superannuation; second childhood, second childishness; dotage; vale of years, decline of life, "sear and yellow leaf" [Macbeth]; threescore years and ten; green old age, ripe age; longevity; time of life., seniority, eldership; elders (veteran); firstling; doyen, father; primogeniture., [Science of old age] geriatrics, nostology.

be aged; grow old, get old; age; decline, wane, dodder; senesce.

aged; old; elderly, geriatric, senile; matronly, anile; in years; ripe, mellow, run to seed, declining, waning, past one's prime; gray, gray-headed; hoar, hoary; venerable, time-worn, antiquated, passe, effete, decrepit, superannuated; advanced in life, advanced in years; stricken in years; wrinkled, long in the tooth, marked with the crow's foot; having one foot in the grave; doting (imbecile); like the last of pea time., older, elder, oldest, eldest; senior; firstborn; ichiban, ichiro [Japanese]., turned of, years old; of a certain age, no spring chicken, old as Methuselah; ancestral; patriarchal (ancient); gerontic.

pro tem

continuity; consecution, consecutiveness; succession, round, suite, progression, series, train, chain; catenation, concatenation; scale; gradation, course; ceaselessness, constant flow, unbroken extent., procession, column; retinue, cortege, cavalcade, rank and file, line of battle, array., pedigree, genealogy, lineage, race; ancestry, descent, family, house; line, line of ancestors; strain., rank, file, line, row, range, tier, string, thread, team; suit; colonnade.

follow in a series, form a series; fall in., arrange in a series, collate; string together, file, thread, graduate, organize, sort, tabulate.

continuous, continued; consecutive; progressive, gradual; serial, successive; immediate, unbroken, entire; linear; in a line, in a row; uninterrupted, unintermitting; unremitting; perennial, evergreen; constant.

continuously; seriatim; in a line; in succession, in turn; running, gradually, step by step, gradatim, at a stretch; in file, in column, in single file, in Indian file.

corridors of time, sweep of time, vesta of time, course of time, progress of time, process of time, succession of time, lapse of time, flow of time, flux of time, stream of time, tract of time, current of time, tide of time, march of time, step of time, flight of time; duration., [Indefinite time] aorist.

elapse, lapse, flow, run, proceed, advance, pass; roll on, wear on, press on; flit, fly, slip, slide, glide; run its course., expire; go by, pass by; be past.

elapsing; aoristic; progressive.

in due time, in due season; in in due course, in due process, in the fullness of time; in time.

stubborn fact, hard fact; not a dream; no joke., center of life, essence, inmost nature, inner reality, vital principle [science of existence], ontology.

existing existent, under the sun; in existence; extant; afloat, afoot, current, prevalent; undestroyed., real, actual, positive, absolute; true; substantial, substantive; self-existing, self-existent; essential., well-founded, well-grounded; unideal, unimagined; not potential; authentic.

length, longitude, span; mileage., line, bar, rule, stripe, streak, spoke, radius., lengthening; prolongation, production, protraction; tension, tensure; extension., [Measures of length] line, nail, inch, hand, palm, foot, cubit, yard, ell, fathom, rood, pole, furlong, mile, league; chain; arpent, handbreadth, jornada [U.S.], kos, vara., pedometer, perambulator; scale (measurement).

be long; stretch out, sprawl; extend to, reach to, stretch to; make a long arm, "drag its slow length along.", render long; lengthen, extend, elongate; stretch; prolong, produce, protract; let out, draw out, spinout; drawl., enfilade, look along, view in perspective.

long, longsome; lengthy, wiredrawn, outstretched; lengthened; sesquipedalian (words); interminable, no end of; macrocolous., linear, lineal; longitudinal, oblong., as long as my arm, as long as today and tomorrow; unshortened (shorten [more]).

lengthwise, at length, longitudinally, endlong, along; tandem; in a line (continuously); in perspective., from end to end, from stem to stern, from head to foot, from the crown of the head to the sole of the foot, from top to toe; fore and aft.

period, age, era; second, minute, hour, day, week, month, quarter, year, decade, decenniumm lustrum, quinquennium, lifetime, generation; epoch, ghurry, lunation, moon., century, millennium; annus magnus.

horary; hourly, annual (periodical).

space, extension, extent, superficial extent, expanse, stretch; room, scope, range, field, way, expansion, compass, sweep, swing, spread., latitude, play., spare room, elbow room, house room; stowage, roomage, margin; opening, sphere, arena., open space, free space; void (absence); waste; wildness, wilderness; moor, moorland; campagna., abyss (interval); unlimited space; infinity; world; ubiquity (presence); length and breadth of the land., proportions, acreage; acres, acres and perches, roods and perches; square inches, square yards; ares, arpents.

spacious, roomy, extensive, expansive, capacious, ample; widespread, vast, world-wide, uncircumscribed; boundless (infinite); shoreless, trackless, pathless; extended.

extensively; wherever; everywhere; far and near, far and wide; right and left, all over, all the world over; throughout the world, throughout the length and breadth of the land; under the sun, in every quarter; in all quarters, in all lands; here there and everywhere; from pole to pole, from China to Peru [Johnson], from Indus to the pole [Pope], from Dan to Beersheba, from end to end; on the face of the earth, in the wide world, from all points of the compass; to the four winds, to the uttermost parts of the earth.