Wiz (noun) — خبير أو عبقري: An expert (informal; short for wizard). Below are 6 words with a similar meaning; the linked ones have full GL Dictionary entries with their meaning in Arabic.
British spelling of whiz.
A person of outstanding skill in an activity, or a top-quality thing; also to perform excellently, as in acing an exam.
Exceptional intellectual or creative power; a person who has it.
A person highly skilled in an art.
expertmaster