Definition of innermost adjective from the Oxford Advanced American Dictionary

     

    innermost

     adjective
    adjective
    NAmE//ˈɪnərˌmoʊst//
     
    [only before noun]
     
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  1. 1 (inmost) most private, personal, and secret I could not express my innermost feelings to anyone. The book reveals his innermost secrets.
  2. 2nearest to the center or inside of something the innermost shrine of the temple opposite outermost
See the Oxford Advanced Learner's Dictionary entry: innermost