From Longman Dictionary of Contemporary Englishthis instantthis instantspokenIMMEDIATELY used when telling someone, especially a child, to do something immediately SYN now Come here this instant! → instant
Examples from the Corpus
this instant• But even at this instant, something relaxed in me.• But this instant information has come at a cost.• Despite this instant recall, however, a lot of water has flowed under the bridge since we lifted the trophy.• Come here this instant!• In this instant, a stronger bit might help with the strong horse to stop him running through the rider's hand.• Now was the time for other things-for the next thing-for figuring out what to do now, this instant.• And as for rushing off this instant, there's no need.• You hie yourself into your room this instant, and remove those -- clothes.• Get down from there this instant. 