immaterial

mastery
UK /ˌɪ.məˈtɪə.ɹɪ.əl/ US /ˌɪ.məˈtɪ.ɹi.əl/adjnoun

card 1 of 10 · synonym

Which word is closest in meaning to 'immaterial' in this sentence?

Whether she had studied hard or not was completely immaterial to her final grade.