bosom friend

Meaning

A 'bosom friend' is an exceptionally close, intimate, and trusted companion with whom you share your deepest secrets and feelings. While somewhat old-fashioned or literary today, it is used to describe a bond of deep emotional connection and loyalty that has lasted for many years.

Examples

• Since their early school days, Arthur had been his dearest bosom friend, the one person he trusted implicitly.

  Since their early school days, Arthur had been his dearest bosom friend, the one person he trusted implicitly.

• She poured her heart out to her bosom friend, knowing her secrets would be entirely safe.

  She poured her heart out to her bosom friend, knowing her secrets would be entirely safe.

• In Victorian novels, characters often write long, emotional letters to a beloved bosom friend.

  In Victorian novels, characters often write long, emotional letters to a beloved bosom friend.

• Though they lived on opposite sides of the world, they remained bosom friends until the very end.

  Though they lived on opposite sides of the world, they remained bosom friends until the very end.

• He felt comfortable sharing his vulnerabilities only with his childhood bosom friend.

  He felt comfortable sharing his vulnerabilities only with his childhood bosom friend.

Common Mistakes

• ✗ She is my breast friend.

  ✓ She is my bosom friend.

  Learners sometimes translate 'bosom' literally to other anatomical terms like 'breast' or 'chest'. 'Bosom friend' is a fixed idiomatic collocation and cannot be substituted with synonyms.

• ✗ I met my bosom friend yesterday at the club and we had a wild party.

  ✓ I met my close friend yesterday at the club and we had a wild party.

  'Bosom friend' has a literary, formal, or nostalgic tone. Using it in highly casual, modern party contexts creates a register clash. Reserve it for deeper, more sentimental discussions of friendship.

Related Expressions

Practice

• In the classic novel, the protagonist shares all her deepest secrets with her beloved ___.

  💡 A literary term for an exceptionally close, trusted companion.

  Show answer

  bosom friend

• He regarded Julian not just as a colleague, but as a true ___ whom he could trust with his life.

  💡 An intimate companion with whom you share deep mutual affection.

  Show answer

  bosom friend