noun
worldly wisdom; practical wisdom; shrewdness
Refers to the ability to navigate the world skillfully, with prudence and practical intelligence. Often carries a nuance of being savvy or street-smart.
彼は世才に長けているので、どんな状況でもうまく立ち回れる。
He is well-versed in worldly wisdom, so he can handle any situation skillfully.
世才を磨くには、多くの経験を積む必要がある。
To cultivate practical wisdom, you need to accumulate a lot of experience.
Compound of 世 (world, society) and 才 (talent, ability). The exact historical derivation is uncertain, but the combination naturally yields the meaning of 'worldly ability' or 'practical wisdom'.