置き換える|おきかえるokikaeru[3]nakadaka (mid-high)

1. ichidan verb, transitive verbto move (something) to another location; to change the position of; to rearrange
2. ichidan verb, transitive verbto replace; to exchange; to switch; to change; to swap; to substitute
   戦争せんそうは私わたしたちの幸しあわせを奪い取うばいとって、代かわりに恐怖きょうふで置おきかえたのよ。↗

   War has taken away our happiness and replaced it with horror.

• Synonym入れ替えるいれかえるNeutralReplaces what is inside something — contents, staff, even air, as in 「空気を入れ替える」 — rather than moving an item to a new spot.
• Synonym差し替えるさしかえるNeutralSwaps one thing for another — documents, photos, drafts — with the focus on replacing the old with the new.
• SynonymチェンジCasualA colloquial loanword for change or replacement, also for the change of sides in baseball.
• Synonym替えるかえるNeutralA broad verb for changing or replacing all sorts of things; 「置き換える」 stresses putting one thing in another's position.
• Synonym付け替えるつけかえるNeutralDetaches the old and attaches the new, so it centers on fitting things on or in; also covers moving an expense or loss to another account.
• Synonymすげ替えるすげかえるNeutralSwaps personnel, often with a casual nuance of replacing someone at will, as in 「首をすげ替える」.
• Synonym掛け替えるかけかえるNeutralConfined to things that hang or are mounted — pictures, signs — and also used for rebuilding a bridge.
• Synonymすり替えるすりかえるNeutralSwaps things secretly, or switches topics to dodge them; it carries a deceptive nuance.
• Synonym置き換えおきかえNeutralThe noun form: it names the act of replacement, while 「置き換える」 is the verb.
• Related取り替えるとりかえるNeutralAn everyday word for changing one thing for another or exchanging with someone; the focus is on the exchange itself.
• Related切り替えるきりかえるNeutralSwitches from one state to another — channels, moods and the like; the focus is on the changeover itself.
• Related引き換えるひきかえるNeutralExchanges or redeems one thing for another, as in 「景品と引き換える」, including bartering goods; the stress is on what you get in return.
• Related交換こうかんNeutralA Sino-Japanese word, mostly a noun, for mutual exchange or fitting in new parts, as in 「電池交換」「部品交換」; 「置き換える」 stresses putting B in A's place or moving it.
• Related交代こうたいNeutralRefers to taking turns or changing shifts, mostly with people; it centers on replacing one person with another.
• RelatedコンバートNeutralA loanword for converting data, especially computer files, and for moving a player to another defensive position; a technical term.
• Related繰り替えるくりかえるWrittenTo exchange or swap things; rare even in written prose.
• Related置換ちかんWrittenA formal, written noun for substitution, used mostly in chemistry, mathematics and computing.
• Related取り替えっことりかえっこCasualColloquial: two people swapping the things they hold, seen mostly among children, with a playful, childlike feel.
• RelatedエクスチェンジNeutralA loanword for exchange and currency conversion; used mostly in names.
• Antonym戻すもどすNeutralPuts something back where it was or restores a former state — the opposite of 「置き換える」.

Default to 「置き換える」 for putting B in place of A or moving something to a new position, as in 「言葉を置き換える」. For swapping out contents or staff use 「入れ替える」, for everyday exchanges with people 「取り替える」, and for secret, sneaky swaps 「すり替える」. 「差し替える」 fits new-for-old swaps of files, photos or drafts, 「切り替える」 switching states, and 「交代」 people taking over shifts. Among nouns, 「交換」 is the all-purpose term, 「置換」 the formal scientific one, and 「置き換え」 the noun form of this headword.

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

1. 今いまある物ものを取り払とりはらい、別べつの物ものを置おく。
2. 今いまある場所ばしょから別べつの場所ばしょへ移動いどうして置おく。