Grammar fix
watch out!
warn of danger
A short warning telling someone to be careful because danger is very close.
expression
How oftenVery common
LevelB1
Used inMostly spoken
Hear it in context
Notice where the phrase sounds natural.
Watch out! That box is about to fall.
When I was learning to ride a motorbike, my brother kept saying, 'Watch out!' whenever I got too close to a parked car.
Fix the pattern
One small grammar move makes it sound right.
Not: Watch out the cyclist!
Say: Watch out for the cyclist! / Watch out! There’s a cyclist!
Use 'watch out!' by itself for an urgent warning, or add 'for' before the danger.
Don't confuse it
Other ways to say it
Warn someone of danger right now
Where commonInternationalBritish
watch out!You're here · A widely used warning about immediate danger.
look outA short, urgent warning when danger is close.mind out!British: warn someone to move or avoid nearby danger.