The term 'very short time' can be described by the following crossword solutions: SECOND (6 letters), TWINKLING (9 letters), JIFF (4 letters), JIFFY (5 letters), TRICE (5 letters), and splitsecond (11 letters). A SECOND is a unit of time equal to one sixtieth of a minute, while a TWINKLING is an informal term for a very short period of time. A JIFF is an even shorter unit of time, usually considered to be one-hundredth of a SECOND. A JIFFY is a slightly longer unit of time, usually considered to be one-hundredth of a minute. A TRICE is an even longer unit of time, usually considered to be one-twentieth of a minute. Finally, a splitsecond is the shortest unit of time, usually considered to be one-thousandth of a SECOND.