Eh. If “elvish” is good enough for the Merton Professor of English at Oxford University then it’s good enough for me, at least when referring to members of the race of people he created for his literary works.
Quod Erat Demonstrandum
I didn't deny your right to use that word, nor did I disparage your use of it. Rather, I merely refuted your objection to / correction of my legitimate use of the dictionary word "elfin," which you disputed.
Regards,