Sindarin 

-en

suffix. adjective suffix

Sindarin [PE17/098; RGEO/62; SA/lin¹; SD/129] Group: Eldamo. Published by

-eb

suffix. adjective suffix

Sindarin [WJ/337; WJ/412] Group: Eldamo. Published by

-iel

suffix. adjective suffix

-in

suffix. adjective suffix

-ren

suffix. adjective suffix

@@@ perhaps a later, S-only, innovation