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

lad

noun. a level, a flat; fair dealing

Gnomish [GL/52; LT2A/Ladwen-na-Dhaideloth] Group: Eldamo. Published by

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).

Gnomish [GL/23; LT1A/Palúrien; LT2A/Ladwen-na-Dhaideloth] Group: Eldamo. Published by

nogin

noun. boy, lad, urchin

A noun appearing as G. nogin “boy, lad, urchin” in the Gnomish Lexicon of the 1910s (GL/61); its derivation is unclear since no nearby words seem to be related, but it could be a variation on G. naug “a dwarf” (GL/59).

Neo-Sindarin: I think this word may be salvageable as Neo-Sindarin ᴺS. nogen, reinterpretted as a derivative of the root √NUK “stunted”, originally an adjective ✱nukina used to refer to short persons or children in a less-than-flattering way. Given its glosses, I would use this word mainly for a mischievous or irritating male child; for a more ordinary word for “boy”, I’d instead use S. ion(n).

unt

noun. nothing

A word appearing as G. unt or unath “nothing” in the Gnomish Lexicon of the 1910s with an adjective form G. untha “no, none” (GL/73, 74). It is related to the negative element G. û (GL/73). It may also be related to ᴱQ. munta “nothing” (PE14/48, 81) and based on the early negative root ᴱ√UMU (QL/98).

Neo-Sindarin: Since √UMU continues to appear in Tolkien’s later writings, I retained ᴺS. unt “nothing” for purposes of Neo-Sindarin, but adapt the adjective form as ᴺS. ont “no, none” with a-affection of u to o. For an alternative, see ᴺS. lad “nothing, zero”.

gobli

noun. dell

A noun in the Gnomish Lexicon of the 1910s glossed “dell” (GL/40), an elaboration on G. gob “hollow of hand” so perhaps originally meaning “✱hollowness”.

Gnomish [GL/40; LT1A/Kópas] Group: Eldamo. Published by

gontha

noun. boy

Gnomish [GL/41; GL/54] Group: Eldamo. Published by

unath

noun. nothing


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.