in·ner·most I. \ˈ ̷ ̷ ̷ ̷ˌmōst also chiefly Brit -_məst\adjective Etymology: Middle English, from inner + -most : farthest inward : inmost < it is his innermost being that is judged — D.C.Hodges > < the innermost part of the nation — F.D.Roosevelt > • inner·most·lyadverb II. noun : the inmost part : inmost being