Dictionary — ontologydriven

let rip en · VERB

(informal, transitive) To unleash, let loose, uncork; to allow (something) to happen or proceed without restraint.
- Ok, it’s all clear. Let ’er rip.
- When she heard the news, she let rip a tirade heard throughout the office.
- Now is the time for a bully trip, So shake her up and let her rip! c. 1870, anonymous (lyrics and music), “Mississippi Boat Song”, published by H. De Marsan
- He let rip a fart that emptied the elevator at the next floor.
(intransitive, usually, with a prepositional phrase) To utter or release without restraint.
- Near-synonym: let loose
- She let rip with a tirade everyone heard.
- She let rip about Mary’s flirting with Lizzie’s boyfriend.
(intransitive, slang) To fart.
- I would also urge you never to let rip within 50 metres of your mother-in-law 2012, Dougie Brimson, Art of Fart, →ISBN:

Spelling	Features	Source
let rip	Tense=Past, VerbForm=Part	lexicographic
let rip	Tense=Past	lexicographic
letting rip	Tense=Pres, VerbForm=Part	lexicographic
lets rip	Number=Sing, Person=3, Tense=Pres	lexicographic