How to say "attachment" in Japanese

• 接続せつぞくJLPT N2approx.Common
  noun, suru verb, transitive verb, intransitive verbCovers the technical sense of joining or linking things together, as in cables, wires, or devices. Use this when 'attachment' refers to a physical or logical connection rather than an emotion.
  インターネットの接続せつぞくが遮断しゃだんされた。↗

  My internet connection was cut off.
• 執着しゅうちゃくJLPT N1approx.Common
  noun, suru verb, intransitive verbEmotional attachment in a negative sense: clinging to something and being unable to let go, or insistent fixation. Choose it when 'attachment' implies unhealthy stubbornness or obsession rather than fondness.
  彼かれは弁護士べんごしになれるという希望きぼうに執着しゅうちゃくしていた。↗

  He clung to the hope that he could be a lawyer.
• 愛着あいちゃくCommon
  noun, suru verb, intransitive verbAttachment as warm fondness or affection, especially toward things such as a hometown, belongings, or a long-used object. This is the neutral, positive sense of emotional attachment.
  私はこの古ふるい麦藁帽子むぎわらぼうしにとても愛着あいちゃくがある。↗

  I am very much attached to this old straw hat.
• 配属はいぞくCommon
  noun, suru verb, transitive verbRefers only to the assignment of a person to a post or unit, the business sense of 'attachment' in phrases like 'attached to the sales department'. Not used for objects or feelings.
  営業マンえいぎょうまんだって、リストラ予備軍よびぐんに配属はいぞくされないように必死ひっしな訳わけです。↗

  After all, even salesmen are desperate to avoid being targeted for downsizing.
• 差し押さえさしおさえCommon
  noun, suru verb, transitive verbLegal attachment in the sense of seizure: authorities impound property or assets over unpaid debts or taxes. It is seldom the word you want for other senses; use it only in legal and financial contexts.

Choose 接続 for technical 'connection/attachment', 愛着 for emotional fondness (things), 執着 for clinging insistence, 配属 for a person's assignment, and 「差し押さえ」 only for legal seizure of property.

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

• 接続せつぞくconnection
• 執着しゅうちゃくattachment
• 愛着あいちゃくattachment (esp. to things)
• 配属はいぞくassignment (of a person to somewhere)
• 差し押さえさしおさえseizure
• 愛着あいじゃくattachment
• アタッチメントattachment
• 別添べってんattachment
• 恋着れんちゃくattachment
• 愛執あいしゅうattachment
• 執着心しゅうちゃくしんattachment (to)
• 貪愛とんあいattachment
• 恋慕れんぼlove
• 執心しゅうしんdevotion
• 恋情れんじょうlove
• 懸想けそうfalling in love
• 愛慕あいぼlove
• 添付ファイルてんぷファイルattached file
• 添付文書てんぷぶんしょattached document
• 附置ふち(organizational) attachment
• 愛あいattachment
• 吸着きゅうちゃくadhesion (by suction)
• 愛欲あいよくattachment (esp. to one's family or a member of the opposite sex)
• つけattachment
• 有心うしんattachment
• 添付書類てんぷしょるいattachment (mail, etc.)
• 残心ざんしんlingering affection