wisdom · noun U /ˈwɪz.dəm/
wisdom
B2 the ability to use your knowledge and experience to make good decisions and judgments
Dictionary examples:
As a coach, he says, he often gleans wisdom from his students.
They had doubts about the wisdom of spending such a sum.
Did we ever stop to question the wisdom of going to war?
Before I went off to college, my father gave me a few words of wisdom.
Learner example:
However, these two [subjects] are vital for us to obtain the wisdom needed in [later] life. (First Certificate in English; B2; Polish)
conventional wisdom
C1 what most people believe
Dictionary example:
These ideas about child care go against the conventional wisdom.
Learner example:
Thus, against conventional wisdom, I think that while a lot of adult problems are caused by money or the lack of it, it is really the ability to deal with money and to see money as a means rather than an end. (International English Language Testing System; C1; Malay)