デポジットdepojitto

1. noundeposit

• Related頭金あたまきんNeutralThe down payment made first on an installment purchase such as a house or car; stresses the large upfront sum, not a refundable deposit.
• Related手付金てつけきんNeutralEarnest money paid at contract signing to secure performance; legal flavor — it may be forfeited or doubled on cancellation, as in 「手付金を払う」.
• Related内金うちきんNeutralA partial payment made in advance on the amount owed, as in 「内金を入れる」; it is later credited toward the price, stressing prepayment.
• Related証拠金しょうこきんFormalGuarantee money posted to secure performance, common in securities and futures trading and in contract security; more formal than 「デポジット」.
• Antonym払い戻しはらいもどしNeutralA refund or repayment; the money flows back to you, the reverse of 「デポジット」, which you hand over upfront.

For rental or bottle deposits use 「デポジット」, as in 「デポジット制」. For earnest money on a contract say 「手付金」, for a down payment 「頭金」; a rental deposit is usually 「敷金」. 「証拠金」 is formal margin money; 「払い戻し」 is the refund that comes back.

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

1. 手付金てつけきん、保証金ほしょうきん。
2. 保管ほかん、寄託きたく。