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let

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1let/ˈlɛt/verb
letsletletting
1let
/ˈlɛt/
verb
letsletletting
Learner's definition of LET  
[+ object] : to allow or permit (someone or something) to do something
Usage  Let is followed by a verb that has the form of the infinitive without to.Let is never used as be let; use be allowed or be permitted instead.
[+ object] 
— used in speech when you are making a polite offer to help someone
   b — used to introduce a polite statement or request
   c formal — used to introduce a command— sometimes used figuratively in a way that is not formal
   d — used to express a warning
Let's and (more formally) let us are used to introduce statements that express a wish, request, suggestion, or command.
   b 
◊ The phrase let's go is used in speech to tell someone to go or work faster.
   c 
◊ The phrase let us pray is used to introduce a prayer.
   d 
◊ The phrases let's face it and let's be honest are used to say that something is true and cannot be denied.
[+ object] : to allow someone to use (something) in return for payment
: rent
   b [no object]chiefly British : to be rented or leased for a specified amount of money
always followed by an adverb or preposition[+ object] : to allow (someone or something) to go, pass by, etc.

let alone

— used to refer to something that is even less likely or possible than the thing previously mentioned
let (someone or something) alone : to not bother or touch (someone or something)

let bygones be bygones

— see bygones

let down

[phrasal verb]
let (someone) down 
: to fail to give help or support to (someone who needs or expects it)— sometimes used figuratively
   b : to make (someone) unhappy or displeased by not being as good as expected
— see also letdown
◊ To let someone down easy/gently is to give someone unpleasant news in a gentle or kind way.
let (something) down or let down (something) 
: to cause or allow (something) to move down gradually
   b : to make (a skirt, a pair of pants, etc.) longer
— see also let your hair down at hair

let fly

orlet fly with
— see 1fly

let go

orlet (something or someone) goorlet go of (something or someone)orlet go (something or someone)
: to stop holding or gripping something or someone— often used figuratively
orlet (yourself) go
: to behave in a very free and open way
let (someone) go 
: to allow (someone who is being held as a slave, prisoner, etc.) to be free
   b : to officially make (someone) leave a job
let (yourself) go : to fail to take care of (yourself)

let it all hang out

informal
: to show your true feelings: to behave in a very free and open way

let loose

— see 1loose

let me see

orlet's seeorlet me think
— used in speech by someone who is trying to remember something

let off

[phrasal verb]
let (someone) off or let off (someone) : to allow (someone) to get off a bus, an airplane, etc.
let (someone) off : to allow (someone who has been caught doing something wrong or illegal) to go without being punished— often used in the phrase let (someone) off the hook
let off (something) : to cause (something) to explode or to be released in a forceful way
— see also let off (some) steam at 1steam

let on

[phrasal verb]
let (someone) on or let on (someone) : to allow (someone) to get on a bus, an airplane, etc.
let oninformal or let on (something) : to tell, admit, or show that you know something
US, informal : to pretend or seem

let out

[phrasal verb]
let (something or someone) out or let out (something or someone) : to release (something or someone)
— see also letout
let (something) out or let out (something) : to make (a shirt, a pair of pants, etc.) larger
— opposite take in at 1take
US, of a school : to end a semester, year, or session

let rip

— see 1rip

let sleeping dogs lie

— see 1dog

let (someone) have it

informal
: to attack, punish, or criticize (someone) in a violent or angry way

let (someone) in on (something)

: to allow (someone) to know (a secret)

let (someone) know

— see 1know

let (someone or something) be

: to not bother or touch (someone or something)

let (something) be known

— see 1know

let (something) slip

orlet slip (something)
— see 1slip

let the cat out of the bag

— see cat

let the grass grow under your feet

— see 1grass

let up

[phrasal verb]
: to stop or become slower
— see also letup
let up on (someone) : to treat (someone) in a less harsh or demanding way
let up on (something) : to apply less pressure to (something)

let (yourself) in for

: to cause (yourself) to have or experience (something bad or unpleasant)
2let/ˈlɛt/noun
plurallets
2let
/ˈlɛt/
noun
plurallets
Learner's definition of LET  
[count]tennis
: a serve that is not accepted or allowed officially and must be done again

without let or hindrance

chiefly British, law
: without being interfered with
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