Unrelenting (adjective) — لا يتراجع: Not stopping or easing. Below are 7 words with a similar meaning; the linked ones have full GL Dictionary entries with their meaning in Arabic.
Never stopping or becoming less severe. A relentless person, storm, or effort keeps going without rest, mercy, or pause. Not relent (to ease off), not relevant…
Unchanging; steady; continuous; persistent; unwavering; consistent; stable; enduring
Firmly fixed; regular and even; reliable.
persistentunceasingtirelessunyielding