I. adjective
Etymology: from present participle of wallop (II)
1. : outstandingly large in size or degree : whopping
accumulate a walloping collection of institutional freaks — New Yorker
able to get a walloping promotion — A.C.Spectorsky
2. : exceptionally fine or impressive : smashing
a walloping new production — Douglas Watt
the men in the blue-trimmed white … won their last race by a walloping twelve lengths — Newsweek
II. adverb
: terrifically , spanking
going to have a walloping big gas bill — Lippincott's Magazine
a walloping dirty great big umbrella — Richard Llewellyn