let1
  
  v.
 (lets, letting; past and past part. let)
     - not prevent or forbid; allow.
- used in the imperative to express an intention, proposal, or instruction:![]()  let's have a drink. 
- used to express an assumption upon which a theory or calculation is to be based:![]()  let A and B stand for X and Y. 
- chiefly Brit. allow someone to use (a room or property) in return for payment.
- award (a contract) to an applicant.
n.
 Brit. a period during which a room or property is rented:
![]() 
 a short let.
Phrase
  
    - let alone
 not to mention.
- let someone/thing be
 stop interfering with someone or something.
- let something fall
 Geometry  draw a perpendicular from an outside point to a line.
- let fly
 attack.
- let oneself go
 - act in an uninhibited way.
- become careless or untidy in one's habits or appearance.
 
- let someone/thing go
 - allow someone or something to go free.
- euphemistic dismiss an employee.
- 
(also let go or let go of)
 relinquish one's grip on someone or something.
 
- let someone have it
 informal attack someone.
- to let
 available for rent.
 
  Phrase verbal
  
  Derivative
  
  Etymology
  OE lætan ‘leave behind, leave out’, of Gmc origin; rel. to late.
 
  
    
let2
  
  n.
 (in racket sports) a circumstance under which a service is nullified and has to be retaken, especially (in tennis) when the ball clips the top of the net and falls within bounds.
v.
 (lets, letting; past and past part. letted or let)
 archaic hinder.
Phrase
  
    - play a let
 (in racket sports) play a point again because the ball or one of the players has been obstructed.
- without let or hindrance
 formal without obstruction; freely.
 
  Etymology
  OE lettan ‘hinder’, of Gmc origin; rel. to late.