One who signs commercial paper in any capacity for purpose of lending his name (i.e. credit) to another party to instrument. Such party is a surety. Black’s 6 , UCC 3-419. See Note, surety.
Note: When you sign a traffic citation, IRS Form 1040, etc., you are the accommodation party. You are the source of all credit for the party whose name appears on the driver license, Social Security card, etc. in your possession. You have provided the TRADE NAME with value (credit) your entire life.