Unsound (adjective) — غير سليم: Not safe or reliable; flawed. Below are 7 words with a similar meaning; the linked ones have full GL Dictionary entries with their meaning in Arabic.
Lacking strength.
faulty; flawed; imperfect; broken; damaged; malfunctioning; inferior; substandard
Trembling or unsteady; also not reliable.
flawedfaultyunreliableinvalid
Not following clear reasoning.
Back to the full entry: Unsound — meaning, examples, Arabic