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

 

superfluously

 adverb
adverb
BrE BrE//suːˈpɜːfluəsli//
 
, BrE//sjuːˈpɜːfluəsli//
 
; NAmE NAmE//suːˈpɜːrfluəsli//
 
(formal)
 
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in an unnecessary way; to a greater degree than you need or want