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

mara-

verb. to dwell

mara

noun. sand

(m)bara-

verb. to dwell

baldrin Archaic

adjective. mighty

gwadh-

verb. to dwell

A verb appearing as G. gwadh- “dwell” in the Gnomish Lexicon of the 1910s with a (deleted) primitive form gu̯ađ (GL/46), likely an allusion to the early root ᴱ√ẆAÐA from the contemporaneous Qenya Lexicon (QL/102). In that document, Tolkien gave the Gnomish form as {gwath- >>} gwar-, however, which might align with the deleted primitive form ᴱ✶gu̯ara- “dwell” from the Gnomish Lexicon (GL/38).

Gnomish [GL/46; QL/102] Group: Eldamo. Published by

mar(o)n

adjective. ripe

marol

noun. sand

A noun with variants marol and mara in the Gnomish Lexicon of the 1910s glossed “sand”, probably a derivative of the root ᴱ√MARA (GL/56); see the entry on the root for further discussion. In later writings, Tolkien used N. lith for “sand”.

mawr

adjective. good

mora

adjective. good

Gnomish [GG/10; GG/15; GG/16; GL/17; GL/56; GL/57; PE13/115] Group: Eldamo. Published by

nosi mora

good by nature

nôs mora

good by nature

polodrin

adjective. mighty

A word appearing as G. polodrin “mighty” in the Gnomish Lexicon of the 1910s, an adjective form of G. polod “power, might, authority” (GL/64). It had an archaic variant {poldurin >>} †polurin or polorin which was sometimes used as a sobriquet for Tulcus.

Neo-Sindarin: Since ᴹ√POL(OD) still had to do with “strength” in Tolkien’s later writings, I’d adapt this word as ᴺS. polodhren “mighty, ✱powerful” for purposes of Neo-Sindarin using the later Sindarin adjective -ren. Given the meanings of its base noun (including authority), I’d assume this adjective has a connotation of political power. I’d constrast it with S. belaith which I’d use for “mighty” in general (independent of authority).

Gnomish [GL/64; LT1A/Poldórëa] Group: Eldamo. Published by

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.