Definitionen
1.VerbTo release from one's grasp; to go from a state of holding on to a state of no longer holding on."You're hurting him! Let him go!; Let go of the phone."
2.VerbTo emotionally disengage or distract oneself from a situation.
3.VerbTo dismiss from employment."The secretary didn't work out, so her boss told her she was being let go."
4.VerbTo ignore (a comment, etc.).
5.VerbTo fail to maintain a standard of appearance, behavior, or performance.
To gain weight."Wow, dude! You've really let yourself go this time!"
6.VerbTo gain weight."Wow, dude! You've really let yourself go this time!"
7.VerbUsed other than figuratively or idiomatically: see let, go."Please, Mom, can you let me go to her party?; We shan’t let our old car go to anyone for less than 15 grand."