Observant (adjective) — مُلاحظ أو مُنتبه: Quick to notice things. Below are 8 words with a similar meaning; the linked ones have full GL Dictionary entries with their meaning in Arabic.
Paying close attention; carefully observant; considerate and thoughtful; alert and focused; showing care and concern
Quick to notice and ready to act; also a warning signal.
Quick to notice and understand.
Alert and watching closely.
Keeping careful watch.
Having knowledge or perception of; conscious and informed; cognizant of situations; alert and observant; having understanding or realization
sharp-eyedkeen