Holy
Etymology
The root ḥā lām lām (ح ل ل) is, according to corpus.quran.com, used in Quran 51 times].
Compare it with the Engl. holy - holy, possessing supreme perfection and power, ontologically divine.
Compare with English. heal - cure of disease, recovery.
Root and Etimon
Possible partial association with the root khā lām wāw (خ ل و), according to corpus.quran.com used in Quran 28 times]. See material - Past.