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

 

uselessly

 adverb
adverb
BrE BrE//ˈjuːsləsli//
 
; NAmE NAmE//ˈjuːsləsli//
 
 
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in a way that is not useful; in a way that does not do or achieve what is needed or wanted His arm hung uselessly at his side (= it was injured and he could not move it).