Definition of tough love noun from the Oxford Advanced American Dictionary

 

tough love

 noun
noun
 
[uncountable]
 
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the fact of helping someone who has problems by dealing with them in a strict way because you believe it is good for them While he may generally be a liberal parent, where drugs are concerned he believes in tough love. There are occasions when only tough-love solutions will work.
See the Oxford Advanced Learner's Dictionary entry: tough love