Grammar fix
keep in check
keep under control
To stop something from becoming too strong, expensive, or difficult to manage.
How oftenCommon
LevelB2
Used inSpeech & writing
Hear it in context
Notice where the phrase sounds natural.
I’m trying to keep my spending in check until payday.
I love online shopping, so I've deleted the apps from my phone to keep my spending in check.
Fix the pattern
One small grammar move makes it sound right.
Not: keep something on check
Say: keep something in check
The fixed phrase uses 'in', not 'on'.
Don't confuse it
Other ways to say it
Stop something growing out of control
How formalEverydayMore formal
keep in checkYou're here · Preventing spending, emotions, or behaviour from becoming excessive.
rein inBringing excessive spending, behaviour, or emotions under control.curbMore formal: limiting excessive spending, behaviour, or impulses.