on the spot Synonyms

on board by ear unpremeditated improv in a pickle on the dot on-site on hand on the fly on the instant right now as soon as possible ad hoc ad lib asap at first glance right away straight off straightaway without hesitation as quickly as possible pronto straight away right off that minute pretty damn quick winging it on the hot seat on this spot in this direction taking for ride thought out loud tossed out that very minute that instant then and there there and then this minute toot sweet without further ado without delay with all speed as fast as possible in double quick time tossed off at once abrupt hereabouts hereupon immediate