all worldly affairs; everything in life
A somewhat literary or formal expression referring to all the practical matters and concerns of daily life. Often used in contexts of detachment or broad perspective.
He is indifferent to all worldly affairs and devotes himself solely to his research.
Abandon all worldly matters and enter a life of seclusion.
世事 means 'worldly affairs' in general, while 世事一切 emphasizes 'all' such matters without exception.
俗事 refers to mundane or secular affairs, often with a slightly more negative or trivial connotation than 世事一切.
Compound of 世事 (worldly affairs) and 一切 (all, everything). The exact historical derivation is uncertain, but the combination is transparently formed from these two elements.