Name Translation

Hoping to translate Quenya name Cévaruinë (fresh/new flame) in Sindarin.

The words’ individual cognates are cîw and ruin, but Cîwruin is most likely missing a mutation or two. Any thoughts?

The safest option would be Cýruin.

√KEW·rūnja > kiurūnja > kȳrūnja > kȳrūnia > kȳrūni > kȳruin.

Thanks!