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

(transitive) To leave alone, let be; to stop bothering.

(idiomatic, chiefly in the negative) Much less; to say nothing of; used after one negative clause to introduce another, usually broader and more important clause, whose negation is implied by the negation of the first. However either of these instances mentioned can be applied with the use of let alone.

hortative of go. / Let us begin or get started. (a call to put a plan into action) / (colloquial) Hurry up; be quick. / (colloquial) Bring it on. (an incitement to fight)

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

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

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

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

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

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