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.

Gnomish

ith

noun. fine snow

A noun in the Gnomish Lexicon of the 1910s glossed “fine snow” (GL/42), derived from early root ᴱ√ISI [IÞI] as pointed out by Christopher Tolkien (LT1A/Isil).

Gnomish [GL/52; LT1A/Isil; PE13/104] Group: Eldamo. Published by

ith

noun. anything

itheg

noun. anything

thlim ith mindon

collective name. *Folk of the Tower of Snow

Name for a race of people in an early name list (PE13/104), apparently a combination of thlim “race”, ith “snow” and mindon “tower”. One of Penlod’s peoples were called the “folk of the Tower of Snow” on LT2/173.

aith

noun. thorn

-ith

suffix. abstract noun

-(o)th

suffix. abstract noun

Gnomish [GL/19; GL/21; GL/23; GL/28; GL/29; GL/32; GL/34; GL/36; GL/43; GL/44; GL/45; GL/47; GL/48] Group: Eldamo. Published by

-os

suffix. abstract noun

Gnomish [GG/08; GL/17; GL/19; GL/20; GL/22; GL/23; GL/24; GL/27; GL/28; GL/29; GL/30; GL/32; GL/33; GL/35; GL/36; GL/37; GL/38; GL/39; GL/40; GL/41; GL/42; GL/45; GL/72] Group: Eldamo. Published by

-ri

suffix. abstract noun

Gnomish [GL/21; GL/22; GL/24; GL/26; GL/27; GL/28; GL/29; GL/30; GL/32; GL/33; GL/35; GL/36; GL/38; GL/39; GL/40; GL/41; GL/42; GL/43; GL/44; GL/47; GL/49; GL/55; GL/61] Group: Eldamo. Published by

-eth

suffix. abstract noun

-ios

suffix. abstract noun

ath

pronoun. they, 3rd pl. pronoun

atha

pronoun. they, 3rd pl. pronoun

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.