Used other than figuratively or idiomatically: see let, go.

(countable) A disappointment or anticlimax. / (countable, uncountable) The neurohormonal release of milk in dairy cows or in breastfeeding human mothers.

Used other than figuratively or idiomatically: see let, down. / (transitive) To allow to descend. / (transitive, idiomatic) To disappoint; to betray or fail somebody

(transitive, idiomatic) To divulge a secret, as by accident or mistake.

(transitive) To cause to explode or come out; to release. / (transitive, idiomatic) To forgive and not punish.

(informal) Let's go; used to suggest that a plan should be put into action.

(transitive, informal) To unleash, let loose, uncork. / (intransitive, usually with a prepositional phrase) To utter or release without restraint. / (slang) to fart

(UK) Describing, or relating to a property bought as an investment, the purchaser letting it to others rather than living in it

(UK) A property of this kind.

(UK, idiomatic) To purchase a property as in investment, and to let it out for rental instead of living in it