A person who receives a fidejussion; someone for whom another person has pledged themselves or their property as a guarantee.
From 'fidejussion' plus '-ary' (relating to or associated with). Literally means the party to whom the guarantee is made.
In Roman commerce, the fidejussionary held incredible power—they could demand payment from the guarantor if the debtor couldn't pay, making personal honor literally worth money.
Complete word intelligence in one call. Free tier — 50 lookups/day.