Grammar fix
be on the lookout for
stay especially alert
To stay alert because you are expecting or trying to notice a particular person or thing.
How oftenCommon
LevelB2
Used inSpeech & writing
Hear it in context
Notice where the phrase sounds natural.
The police are on the lookout for a white van seen near the shop.
When I move to a new city, I’m usually on the lookout for affordable cafés where I can work for a few hours.
Fix the pattern
One small grammar move makes it sound right.
Not: We’re on the lookout of a new supplier.
Say: We’re on the lookout for a new supplier.
Use 'on the lookout for', not 'on the lookout of'.
Don't confuse it
Other ways to say it
Watch carefully for someone or something
How alertCasualOn guard
keep an eye out forCasually ask someone to notice something if it appears.look out forWatch for something you need to notice or avoid.
be on the lookout forYou're here · Emphasizes staying alert for a particular person or thing.