clamp down on
B2CEFR level
35/100Rarity: fairly common
NeutralRegister
To take firm, strict action in order to stop or restrict an undesirable activity.
The council is clamping down on illegal parking near the school gates.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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