whatever you do mainly spoken phrase
used for emphasis when you are warning someone that is very important to do or not to do something
Whatever you do, don’t lend him money.
Thesaurus: ways of warning or advising someonesynonym
Main entry: whatever
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whatˈever you do idiom
used to warn sb not to do sth under any circumstances
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Don't tell Paul, whatever you do!
Useful english dictionary. 2012.