inmost

/ˈɪnˌmoʊst/
adjective
  1. Farthest inside; most private or secret.
    • He spoke from his inmost heart, revealing his true feelings.
    • She kept her inmost thoughts hidden from everyone.
    • The treasure was hidden in the inmost chamber of the cave.
Antonyms
What does "inmost" mean? | whatsthatwordmean | whatsthatwordmean