Definition of wholeheartedly adverb from the Oxford Advanced Learner's Dictionary

 

wholeheartedly

 adverb
adverb
BrE BrE//ˌhəʊlˈhɑːtɪdli//
 
; NAmE NAmE//ˌhoʊlˈhɑːrtədli//
 
(approving)
 
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completely, in an enthusiastic way to agree wholeheartedly She threw herself wholeheartedly into her work.