SLAP

I. noun Etymology: Middle English slop, from Middle Dutch; akin to Middle Dutch slippen to slip Date: 14th century opening , breach , II. transitive verb (~ped; ~ping) Etymology: akin to Low German ~p, noun blow Date: 15th century 1. to strike sharply with or as if with the open hand, to cause to strike with a motion or sound like that of a blow with the open hand, to put, place, or throw with careless haste or force , to assail verbally ; insult , to subject to a penalty, III. noun Date: 1606 1. a quick sharp blow, a blow with the open hand, a noise like that of a ~, rebuff , insult , IV. adverb Etymology: probably from Low German ~p, from ~p, noun Date: 1672 directly , smack