Stringent (adjective) — صارم ومُتشدد: Strict, precise and demanding. Below are 7 words with a similar meaning; the linked ones have full GL Dictionary entries with their meaning in Arabic.
strictrigorousexactingtoughsevere
requiring much effort, skill, or attention; insisting upon exact conformity to requirements; making difficult requests or requiring high standards
Extreme in effect or action; severe or harsh; having a strong or far-reaching impact; characterized by radical change or measures