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.
hildi
collective name. Mortal Men, (lit.) Followers
hilde
noun. heir
aryon
noun. heir
ildi
collective name. men
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.
hildi
followers
hildi, -hildi noun "followers" (used = mortal men, the Second-born of Ilúvatar) (KHIL) (also Hildor, q.v.). Dat. pl. hildin "for men", a dative pl. occurring in Fíriel's Song. Cf. hildinyar "my heirs", evidently *hildë, hildo "follower, heir" + -inya "my" + -r plural ending (EO)
hildë
noun. heir, follower, heir, follower; [ᴱQ.] child
A word for “heir” appearing only in its possessed plural form hildinyar in the phrase sinomë maruvan ar Hildinyar tenn’ Ambar-metta “In this place will I abide, and my heirs, unto the ending of the world” (LotR/967). It had this same form in its first appearance in Lord of the Rings drafts of the 1940s (SD/56), and is clearly based on the root √KHIL “follow” (PE17/18; WJ/387; Ety/KHIL). It is very similar to Hildor “Men, Aftercomers, (lit.) Followers” (S/99; WJ/219, 386), which sometimes appeared as Hildi instead, especially in earlier writings (MR/130; PE17/18, 101; Ety/KHIL). Its singular form is generally assumed to be hilde, probably with stem form hildi-, but it could be hil (hild-) instead.
Conceptual Development: The Qenya Lexicon of the 1910s had ᴱQ. hil or ᴱQ. hilde “child” under the early root ᴱ√HIL [χili] (QL/40), also mentioned in the Poetic and Mythological Words of Eldarissa (PME/40). In the contemporaneous Gnomish Lexicon it was derived from primitive ᴱ✶χilþē and equated to G. hiltha “youth of either sex, more often masc” (GL/49). The sense “child” seems to have been later tranfered to hína.
Neo-Quenya: For purposes of Neo-Quenya, I would would assume the basic meaning of hilde is “one who comes after me”, and thus is applicable to both descendents or followers. For “heir = one who inherits my wealth” I would instead use [ᴹQ.] aryon. I would further assume hilde is generic, and distinct from Hildo “Man = After-comer”.
Yavannildi
followers of yavanna
Yavannildi pl. noun "Followers of Yavanna" (sg. #Yavannildë?), Elvish women who knew and kept the secret of the making of coimas (lembas) (PM:404). Apparently Yavanna + hildi.
aryon
heir
aryon noun "heir" (GAR under 3AR). In a deleted entry in the Etymologies, the word was given as aryo, aryon and defined as "son of property = heir" (VT45:14), whereas in VT45:16 (reproducing deleted material from the Etymologies), the word is defined as "heir, prince". Alternative form haryon.
hildor
collective name. Men, Aftercomers, (lit.) Followers
A name for Men as the second-born children of Ilúvatar, following the elves (S/99). This name is a derivative of the root √KHIL (WJ/386-7) and is related to the word hildë “heir, follower”. This term is only attested in the plural, and it isn’t clear whether the singular term ✱Hildo can be used for a single Man (normally Atan). This name was sometimes glossed “Aftercomers” (S/99), but its other gloss “Followers” (S/103) is a better translation. The gloss “Aftercomers” probably alludes to Apanónar “After-born”, another name for Men.
Conceptual Development: In Silmarillion drafts from the 1930s, this term appeared as ᴹQ. Hildi (LR/245). In The Etymologies, the word hildi “followers, mortal men” appeared as a derivative of ᴹ√KHIL (Ety/KHIL), implying a singular form of ✱hilde.
In The Lord of the Rings, the plural term Q. Hildinyar was translated as “my heirs” (LotR/967). When it was written, Tolkien probably intended it to be the same word as Hildi “Men, Followers” (PE17/101, 103). In Silmarillion revisions from the 1950s-60s, this term was first written Hildi (MR/130) but in the late-50s was changed to Hildor (WJ/219). Perhaps Tolkien split these terms, so that Hildor (singular ✱Hildo) was the proper name for Men, while hildi (singular ✱hildë) was the ordinary word for “follower” or “heir”.
rêda
noun. heir
echil
collective name. Followers
hîl
noun. heir
hîl
noun. heir
hîl
heir
- #hîl (i chîl), same forms in pl., also with article (i chîl), coll. pl. híliath. Isolated from the name Eluchíl, heir of Elu (WJ:350). 2) rêd (construct red), pl.rîd (idh rîd). The word is presented as a borrowing from Beorian, so it may not be the normal Sindarin word for ”heir”.
hîl
heir
(i chîl), same forms in pl., also with article (i chîl), coll. pl. híliath. Isolated from the name Eluchíl, heir of Elu (WJ:350).
rêd
heir
(construct red), pl.rîd (idh rîd). The word is presented as a borrowing from Beorian, so it may not be the normal Sindarin word for ”heir”.
Two similar words appeared in The Etymologies of the 1930s: ᴹQ. aryon “heir” as a derivative of the root ᴹ√GAR, and ᴹQ. haryon “(heir) prince” as a derivative of the root ᴹ√ƷAR, both roots having to do with possession (Ety/GAR; Ety/ƷAR). Drafts of these entries had aryo, aryon “son of property = heir” and aryon “heir, prince” (EtyAC/GAR; EtyAC/ƷAR). Based on the gloss “son of property”, I think it is likely the second element of these words is the root ᴹ√YO(N) “son”.
Neo-Quenya: It is possible Tolkien intended haryon and aryon to coexist, but since we have other “prince” words I would just use aryon “heir = one who inherits wealth” for purposes of Neo-Quenya.