English

Definition of lickety-split adverb from the Oxford Advanced Learner's Dictionary

 

lickety-split

 adverb
adverb
BrE BrE//ˌlɪkəti ˈsplɪt//
 
; NAmE NAmE//ˌlɪkəti ˈsplɪt//
 
(North American English, old-fashioned, informal)
 
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very quickly; immediately Word Origin early 19th cent. (in the phrase as fast as lickety ‘at full speed’): from a fanciful extension of lick + the verb split.
See the Oxford Advanced American Dictionary entry: lickety-split