Sprezzatura
Etymology
Italian, coined by Baldassare Castiglione in "Il Cortegiano" ("The Book of the Courtier," 1528), from "sprezzare" ("to disdain, to make light of"). He urged the ideal courtier to practice a certain sprezzatura so that art appears artless. The word has since spread into fashion and design for effortless-seeming style.
noun · /spret-sah-TOO-rah/
The art of making something difficult look effortless while hiding how hard you worked at it.
What it names
Studied nonchalance — the graceful ease that conceals its own labour.
Example
He tied the scarf with a careless sprezzatura that had clearly taken practice.
Related idea
It is the deliberate opposite of trying visibly hard; where nonchalance can be genuine indifference, sprezzatura is a performance of ease.