懐かしむ

1. Origins, structure, and basic meaning

• Structure: The spelling is 懐かしむ, read なつかしむ, and it is a godan transitive verb for fondly recalling and missing a past person, time, or place.
• Basic usage: 懐かしむ means to look back on a memory or former scene with affectionate nostalgia and longing.

2. Common pitfalls and similar expressions

• One person's recollection and voices heard at an event
  • The forms are 懐かしんだ and 懐かしむ. The first describes a grandfather remembering school days from photographs; the second modifies voices expressing nostalgia for an old townscape.
• School days in photographs and streets remembered wistfully
  • 祖父は古い写真を見て学生時代を懐かしんだ。 — My grandfather looked at old photographs and fondly remembered his school days.
  • 昔の町並みを懐かしむ声が会場で聞かれた。 — People at the event spoke wistfully of the old townscape.