Definition of wholehearted adjective from the Oxford Advanced American Dictionary

 

wholehearted

 adjective
adjective
NAmE//ˌhoʊlˈhɑrt̮əd//
 
(approving)
 
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complete and enthusiastic The plan was given wholehearted support.
wholeheartedly
 
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adverb to agree wholeheartedly She threw herself wholeheartedly into her work.
See the Oxford Advanced Learner's Dictionary entry: wholehearted