Instant, informally (5)
I believe the answer is:
jiffy
(Other definitions for jiffy that I've seen before include "Split second" , "Two shakes of a lamb's tail?" , "Very short moment - type of bag" , "Brief moment" , "Moment (slang)" .)
I believe the answer is:
jiffy
(Other definitions for jiffy that I've seen before include "Split second" , "Two shakes of a lamb's tail?" , "Very short moment - type of bag" , "Brief moment" , "Moment (slang)" .)