What is Forget ?
Forget is (verb) 1. not to remember He’s forgotten the name of the restaurant. I’ve forgotten how to play chess. She forgot all about her doctor’s appointment. Don’t forget we’re having lunch tomorrow. Great scenes at home I forgot my wife’s birthday! 2. to leave something behind When he left the office he forgot his car keys. 3. forget about it! do not worry about it! (NOTE: forgetting forgot has forgotten )
source: Easier English, Student Dictionary Upper Intermediate Level