- 1〔心の奥底〕 ((from)) the bottom of one's heart;((in)) the innermost recesses of one's heart
- 2〔信頼している人〕one's confidant;〔女性の〕one's confidante
腹心の confidential; trusted
- 腹心の友
- a trusted [very close] friend;《口》 a bosom buddy
- 腹心の召使
- a devoted [confidential/trusted] servant
- 社長の腹心
- the president's confidant(e)