Impenetrable (adjective) — منيع لا يُخترق: Impossible to enter, pass through, or understand. An impenetrable wall, forest, or argument cannot be pierced. Not impending (coming soon), not imperative (must-do), and not penetrate (to go through successfully). Below are 8 words with a similar meaning; the linked ones have full GL Dictionary entries with their meaning in Arabic.
Impossible to travel through or across.
Not able to be seen through; hard to understand.
closely compacted in substance; having the constituent parts crowded closely together; difficult to understand because of complexity or obscurity; stupid or…
Not able to be reached or used.
impermeableinvulnerableunfathomableimpregnable
Not allowing water to pass; not affected by.
Impossible to understand.
Unable to be dissolved; impossible to solve.