There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
fair
adjective. free, unconstrained
glaim
adjective. serene, clear, fair (espec. of weather)
glaimri
noun. serenity, fair weather
A word in the Gnomish Lexicon of the 1910s appearing as G. glaimri “serenity, fair weather”, an abstract noun form of G. glaim “serene, clear, fair (espec. of weather)” (GL/39).
Neo-Sindarin: If adapting this word to Neo-Sindarin, I would make it an abstract noun form based on Neo-Sindarin ᴺS. glaen “serene, fair (weather)”, hence: ᴺS. glaenas “serenity, fair weather”.
gwant
noun/adjective. beautiful, fair; loveliness
lad
noun. a level, a flat; fair dealing
gwanthi
noun. fairness, beauty; a fair face, pretty
i·glin grandin a·dol erethrin airi
*the fair towns of Holy Lonely Isle
ladin
adjective. level, smooth; fair, equitable
bansil
proper name. Fairgleam
gwandra
adjective. beautiful
bladwen
noun. plain
A noun in the Gnomish Lexicon of the 1910s glossed “a plain” (GL/23), probably derived from the root ᴱ√PALA “flatness” as suggested by Christopher Tolkien (LT1A/Palúrien; QL/071).
brag
adjective. fresh
cwelm
noun. dusk
fegrin
adjective. free
An Gnomish adjective for “free” mentioned in passing in the Qenya Lexicon of the 1910s under the early root ᴱ√FAẎA (QL/37). It did not appear in the contemporaneous Gnomish Lexicon.
fîr
adjective. late
gwandreth
noun. beauty
gwanin
adjective. beautiful
gwanwen
noun. beauty
gwanweth
noun. beauty
laib
adjective. green
math
noun. dusk
mawr
adjective. good
mora
adjective. good
thas
pronoun. thy
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
An adjective in the Gnomish Lexicon of the 1910s appearing as G. glaim “serene, clear, fair, espec. of weather” (GL/39), a cognate of ᴱQ. kalaina of similar meaning and hence based on the early root ᴱ√KALA [✱ᴱ√GALA] “shine golden” (QL/44).
Neo-Sindarin: I think G. glaim can be salvaged as ᴺS. glaen, since √GAL was still associated with light in Tolkien’s later writings, but I would derive it instead from the root ᴹ√GALAN “bright”, perhaps from ✱g(a)laina.