Read in-depth answer here. Also to know is, what is a antonym for focused?
(of light rays) converging on a point. "focused light rays can set something afire" Antonyms: unfocussed, diverging, divergent, unadjusted, unfocused.
One may also ask, what is a word for easily distracted? Adjective Synonyms. Distractable. distractible. easily sidetracked.
Herein, what do you call a person who is focused?
The word "concentrate" comes closest to the meaning you pose - verb (to concentrate), noun (concentration), adj/adv (concentrated/ly). You call them a person who can concentrate on a thing https://www.thefreedictionary.com/concentrate.
Is focused an adjective?
The adjective focused derives from the verb focus, which means to fix on a central point. When you are focused on school, all your attention is fixed on one thing: school. When your telescope is focused on Jupiter, you have aligned the lenses with where Jupiter is in the sky.