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

 

arduously

 adverb
adverb
BrE BrE//ˈɑːdjuəsli//
 
, BrE//ˈɑːdʒuəsli//
 
; NAmE NAmE//ˈɑːrdʒuəsli//
 
 
jump to other results
in a way that involves a lot of effort and energy, especially over a period of time They searched arduously for clues.