Noldorin 

thinna-

verb. to fade, *(lit.) become grey

Noldorin [Ety/THIN] Group: Eldamo. Published by

thinna-

verb. to fade, to grow towards evening

The punctuation in The Etymologies is considered incorrect (the full dot after this word should conceivably be a comma)

Noldorin [Ety/392] Group: SINDICT. Published by

gwinna-

verb. to fade

Noldorin [Ety/WIN; EtyAC/WIN] Group: Eldamo. Published by