Underdeveloped (adjective) — غير متطور: Not fully developed. Below are 7 words with a similar meaning; the linked ones have full GL Dictionary entries with their meaning in Arabic.
Not fully developed; childish.
Directed toward the rear, earlier time, or a less advanced state; moving or looking in reverse rather than forward
Basic and undeveloped; relating to first principles.
undevelopedstuntedundergrowndeprived