installment, n. 1. partial payment, earnest, deposit, advance payment.
2. part, portion, segment, section, chapter, act, scene.
instance, n. 1. example, case, precedent; case in point, specific, Inf. for instance; typical situation, representative case, illustration, exemplification; quotation, citation.
2. for instance as an example, for example.
instant, n. 1. moment, minute, twinkling, flash, jiffy, breath, trice, crack, burst, flick, Inf. whipstitch, flash of lightning, twinkling of an eye, Fr. coup d'oeil.
2. present time, this very minute, this very hour, specific moment, stroke of time, particular time, moment, hour, time of day.
-adj. 3. immediate, sudden, abrupt, direct, instantaneous; prompt, quick, expeditious; rapid, swift, fast, smart, hasty, speedy, on-the-spot.
4. urgent, pressing, critical, earnest, crying, exigent, importunate, absorbing.
instantaneous, adj. instant, immediate, direct, on-the-spot; prompt, quick, expeditious; rapid, fast, swift, hurried, precipitate, headlong; cursory, fleeting, momentary; sudden, abrupt, hasty, speedy.
instantaneously, adv. immediately, instantly, at once, abruptly, suddenly; now, on the instant, on the moment, right away, forthwith; in a trice, in a jiffy, in no time, in less than no time, in a fraction of a second; directly, without delay, Archaic, anon, straightaway; quick as thought, quick as greased lightning, like a shot, like a thunderbolt, SI. like mad, SI. like a bat out of hell, in the twinkling of an eye, before you can say “Jack Robinson,” before you can turn around, before the ink is dry; urgently, SI. pronto, in the same breath, at one jump, posthaste, apace, fast, Inf lickety-split, full-tilt, at full blast, in high gear, as fast as one's legs can carry one.
instate, v. install, invest, induct, initiate, Rare, aus picate; inaugurate, swear in, administer the oath of office; establish, chair, seat; crown, enthrone; frock, Eccles. ordain.
instead, adv. preferably, in preference to, rather than; instead of, in lieu of, Fr. au lieu de; as a replacement for, in the place or stead of, as a substitute for, as proxy for.
instep, n. arch, metatarsal arch, Anat., Zool. meta
instigate, v. 1. incite, actuate, provoke, initiate, generate, start, Inf. start something, look for trouble; poke, prod, prick, thrust, goad, prompt, spur, egg on; stimulate, animate, whet, invigorate, motivate, inspire, inspirit, rally, awaken, vivify, bestir, enliven, liven up, jolt, jog; encourage, abet, embolden, nerve, build up, buck up; induce, impel, constrain, press, push, move, force; persuade, incline, dispose, lobby, predispose, influence, prevail upon, coax, ply, sway, talk into; tempt, inveigle, beguile, entice, wheedle, lure, allure, Obs. allect.
2. foment, agitate, excite, arouse, rouse, whip, whip up, work, work up, stir, stir up, wind up, inflame, en-flame, fire, fire up, kindle, enkindle, touch off, Inf. psych up.