phrasal
1.
a. : to cast off or drop
the mooring lines are let go — Lamp
more windjammers let go their anchors on the reef — Marjory S. Douglas
b. : to release one's hold on or break away from
he let go the ladder and jumped — K.M.Dodson
tons of riverbank let go … into the stream — S.H.Adams
c. : to cease to pay attention to : dismiss from one's mind
had not made a career … of being young, but she had not let herself go, either — Hamilton Basso
did the best he could, and let it go at that
d. : to dismiss from employment : fire
couldn't do the work so they had to let him go
2. : to give out : emit
the great whistle let go a defiant blast — Frederick Way
3.
a. : to abandon self-restraint : give uninhibited expression to impulses or emotions : cut loose
one of those actors who are too anxious to be thought gentlemen to let themselves go — T.C.Worsley
let himself go in his letters as though he were talking to his correspondent — Atlantic
in Port Royal they let go with a roar after the long watches at sea — H.E.Rieseberg
once home, she thought, … she could really let go — Nancy Hale
b. : to discharge matter or wind from the body
4.
a. : to relax one's hold
the dog had him by the throat and wouldn't let go
b. : to release a line or drop anchor
at the command “ let go and haul” we came smartly about on a new tack
found a good anchorage in the lagoon and let go
5. : to let fly
Punch let go with a serial diatribe — Saturday Review