3: Powered By Fate
From p. 86 of Fate Core
A skill is a word that describes a broad family of competency at some-thing – such as Athletics, Fight, or Deceive – which your character might have gained through innate talent, training, or years of trial and error. Skills are the basis for everything your character actually does in the game that involves challenge and chance (and dice).
Skills are rated on the adjective ladder. The higher the rating, the better your character is at the skill. Taken together, your list of skills gives you a picture of that character’s potential for action at a glance – what you’re best at, what you’re okay at, and what you’re not so good at.
(See also Skills and Stunts.)