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

-gen

suffix. *earth

An unglossed suffix in the Gnomish Lexicon of the 1910s, final element of G. grosgen “soil”, and cognate to ᴱQ. kēmi “earth, soil, land” (GL/42), and so probably derived from the root ᴱ√KEME “soil” (QL/46).

Gnomish [GL/42; LT1A/Kémi] Group: Eldamo. Published by

gen

noun. closed hand, grip

-a

suffix. genitive suffix

Gnomish [GG/10; GL/17] Group: Eldamo. Published by

-n

suffix. genitive suffix

gwinta-

verb. to see

ior Archaic

noun. eagle

An archaic word for “eagle” in the Gnomish Lexicon of the 1910s, related to ᴱQ. ea(r) of the same meaning (GL/51), though the exact correspondence (and sound changes) are not clear.

Gnomish [GL/51; LT1A/Eärendel] Group: Eldamo. Published by

ioroth

noun. eagle

A word for “eagle” in the Gnomish Lexicon of the 1910s, an elaboration of archaic G. †ior “eagle” of the same meaning (GL/51).

Gnomish [GL/51; LT1A/Eärendel] Group: Eldamo. Published by

mútha-

verb. to depart, go, leave; (c. gen.) to leave the place of or time of speaker; to go forward

A verb in the Gnomish Lexicon of the 1910s with various glosses: “depart, go, leave”, “c. gen. leave the place of, time of, speaker”, and “go forward” (GL/58). Below it Tolkien wrote another word G. mu whose gloss may be “flow” or “from” according to the editors. This mu may be the basis of the verb mútha-, especially if mu means “from”.

thorn

noun. eagle

Gnomish [GL/73; LT1A/Sorontur] Group: Eldamo. Published by

thê-

verb. to see

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.