How to say "intimately" in Japanese

• 膝を交えてひざをまじえて
  expressionCovers 'intimately' in the physical sense of sitting knee to knee and talking face to face. It is an idiomatic phrase for close personal conversation rather than a general adverb, and a less common choice.
• 親しくしたしく
  adverbCovers 'intimately' in the sense of close personal relationships: knowing someone well, being on intimate terms. Use it for intimacy between people rather than for the manner of a conversation.
  私わたしたちは長年ながねん親したしくしている。↗

  We've been close friends for many years.
• 深くふかく
  adverbIts basic meaning is 'deeply'; the 'intimately' rendering fits contexts of deep involvement or connection, such as being intimately involved with something. In most other uses it will simply read as 'deeply'.
  その小説しょうせつを読よんで深ふかく感動かんどうした。↗

  I was deeply moved by that novel.
• しんみり
  adverb (with と), suru verbCovers 'intimately' for a quiet, subdued mood: talking softly and seriously in a calm atmosphere, a quiet heart-to-heart. It points to the muted tone of the occasion rather than closeness between people.

Choose 「膝を交えて」 for intimate face-to-face talk while sitting close, 「親しく」 for close personal relationships, 「深く」 for deep involvement or connection, and 「しんみり」 for a quiet, subdued, heart-to-heart mood.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 膝を交えてひざをまじえてintimately
• 親しくしたしくclosely
• 深くふかくdeeply
• しんみりquietly