1. (psychoanalysis) primitive instincts and energies underlying all psychic activity
   "Freud believed the id was the source of all psychic energy"

1. A card or badge used to identify the bearer
   "you had to show your ID in order to get in";
   - I.D.
    
2. A state in the Rocky Mountains
   - Idaho, Gem State, Id.

1. I would; I should; I had
   "I'd already eaten when they arrived"; "I'd love to come to the party"; "I'd better go now"

Derived forms: ids, IDs

Type of: American state, badge, inherent aptitude, instinct, positive identification

Part of: America, 'Merica, the States, U.S., U.S.A., unconscious, unconscious mind, United States, United States of America, US, USA

Encyclopedia: Id, ego & super-ego