Synonyms of split-second

nounA fraction of a second; hence (figurative, also attributive) a very short time period; an instant...

• bat of an eyeSynonym of blink of an eye.
• bitSpecifically, a small amount of time.
• blink of an eyeA moment (a very short period of time).
• eyeblinkA moment (a very short period of time).
• flashA very short amount of time.
• half a moA brief time; a jiffy.
• instantA very short period of time; a moment.
• jiffA jiffy; a moment; a short time.
• jiffyA very short, unspecified length of time.
• minuteA short but unspecified time period.
• mo
• moment
• New York minuteAn instant; an extremely short time.
• New York secondSynonym of New York minute (“short instant of time”).
• no timeA very short period of time.
• secSecond, ¹⁄₆₀ of a minute.
• secondA short, indeterminate amount of time.
• span
• spurtA moment, a short period of time.
• tickA short period of time, particularly a second.
• triceNow only in the phrase in a trice: a very short time; the blink of an eye, an instant, a moment.
• twinkA very short moment of time.
• twinkleA brief moment; a twinkling.
• twinklingA very short period, notionally the time it takes to blink the eyes.
• whileAn uncertain short moment.
• crack British, datedA brief time; an instant; a jiffy.
• glimpse rareA brief, unspecified amount of time; a moment.
• jot obsoleteAn instant, a moment.
• stound archaic, dialectalA brief span of time, moment, instant.