Definition of overarching adjective from the Oxford Advanced American Dictionary

 

overarching

 adjective
adjective
NAmE//ˌoʊvərˈɑrtʃɪŋ//
 
[usually before noun](formal)
 
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very important, because it includes or influences many things an overarching aim/concept/issue the overarching themes of race, violence and disorder
See the Oxford Advanced Learner's Dictionary entry: overarching