Definition of instant :
1. A day of the present or current month; as, the sixth instant; - an elliptical expression equivalent to the sixth of the month instant, i. e., the current month. See Instant, a., 3.
2. A point in duration; a moment; a portion of time too short to be estimated; also, any particular moment.
3. Closely pressing or impending in respect to time; not deferred; immediate; without delay.
5. Present; current.
6. Pressing; urgent; importunate; earnest.
insistent, straightaway, prepared, ostentation, point, blink, bit, min, premixed, flash bulb, ready-to-eat, repetitive, big, straight off, beat, immediately, indorsement, tick, import, inst, winking, endorsement, present moment, second base, flashbulb, second gear, heartbeat, ready-to-serve, wink, hour, eye blink, irregular, egregious, secondment, exacting, crack, ready-to-use, news bulletin, instantly, forthwith, jiffy, rank, flash lamp, prompt, mo, nictitation, flashgun, glaring, pulsation, exigent, arcsecond, nictation, vociferous, on-the-spot, blink of an eye, twinkle, twinkling, flashing, crying, pulse, strident, precooked, jiff, clamorous, fanfare, second, imperative, newsbreak, at once, clamant, flare, flash, New York minute, s, minute, sec, trice, consequence, flagrant, gross, newsflash, time, minute of arc, first off, blinking, fast, split second, blatant, right away, right off, arcminute, directly, instantaneous, immediate, photoflash
circumstance (part of speech: noun)
timelessness (part of speech: noun)
now (part of speech: noun)
- " Two hundred and fifty dollars," was the instant reply. - "Personal Reminiscences of Early Days in California with Other Sketches; To Which Is Added the Story of His Attempted Assassination by a Former Associate on the Supreme Bench of the State", Stephen Field; George C. Gorham.
- They rushed upon me; in an instant I was on foot. - "Marie", Alexander Pushkin.
- I did- wrote the instant I got the paper. - "The Mystery of The Barranca", Herman Whitaker.