check
make sure that there is nothing wrong with somebody or something
check on
fail to do something or help somebody as he/she had hoped
let down
2. cause somebody to start doing something, especially laughing or talking
3. cause a series of things to happen/occur
set off
1. find the answer to something
2. plan something in detail
3. have a good or specified result
4. engage in vigorous physical exercise
check in
let up
1. aim or intend to do something
2. arrange or display something in a particular order or position
set out
try hard to improve or achieve something
work on
tick or otherwise mark an item on a list to show that it has been dealt with
check off
2. excuse somebody from a task or obligation
let off
delay or block the progress of somebody or something
set back
2. develop or produce by activity or effort
work up
1. prove to be true or correct
2. confirm the truth or inform yourself about somebody or something
3. look at or take notice of
check out
reveal information
let on
give somebody an air of unusual superiority / make somebody seem better than the rest in an unusual way
2. earn money in order to be able to pay a debt
work off
(three words)
investigate in order to establish the truth about or accuracy of something
check up on
(three words)
allow somebody to know or share something secret
let in on
1. make an innocent person appear guilty of something
2. establish a business, institution, organisation, etc.
set up
(three words)
proceed gradually towards something more advanced or intense
work up to