People who place money or valuables into a bank or other institution for safekeeping.
From Latin 'depositum' (something entrusted) plus the agent suffix '-or' meaning one who does something, creating 'depositor'—people who deposit.
The word 'depositor' contains a hidden promise: deposit comes from Latin 'deponere' meaning to put down or entrust, which is why banks use this term—they're literally claiming to be trustworthy custodians of what you put in their care.
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