Quenya 

umbo(n)

noun. hill, lump, clump, mass, lump, clump, mass, hill

A noun from 1967 notes on the comparative, apparently meaning “hill, lump, clump, mass” and derived from the root √MBŎNO (PE17/93), where the um- developed from syllabic initial ṃ-. Tolkien introduced the root √MBŎNO to serve as a new basis for S. amon “hill”, motivated by his decision to give the root √AM “up” a new meaning: √AMA “addition, increase, plus”, so that it could serve as the basis for the intensive prefix am- (PE17/91).

Neo-Eldarin: I prefer Q. an- as the basis for intensives, but I think the word umbo(n) might be worth retaining in the more limited sense “lump, clump, mass”. For “hill”, however, I’d use the better attested Q. ambo.

Cognates

  • S. amon “hill, mountain with steep sides; lump, clump, mass, hill, (isolated) mountain; lump, clump, mass; [G.] steep slope” ✧ PE17/093

Derivations

  • ṃbono “hill, lump, clump, mass” ✧ PE17/093
    • MBON “*lump, mass” ✧ PE17/093

Phonetic Developments

DevelopmentStagesSources
ṃbono > umbo(n)[ṃbono] > [ṃbon] > [umbon]✧ PE17/093

umbo

hill, lump, clump, mass

umbo, umbon noun "hill, lump, clump, mass" (PE17:93)

ambona

noun. hill

ambo

hill, rising ground

ambo noun "hill, rising ground" (Markirya, PE17:92), "mount" (PE17:157), allative pl. ambonnar "upon hills" in Markirya (ruxal' ambonnar "upon crumbling hills") According to VT45:5, ambo was added to the Etymologies as a marginal note.

amun

hill

amun (amund-) noun "hill" (LT2:335; in Tolkien's later Quenya ambo)

Túna

hill, mound

Túna (also Tún) place-name, used of the hill on which Tirion was built (Silm, TUN, KOR), derived from a stem (TUN) apparently meaning simply *"hill, mound".

tundo

hill, mound

tundo noun "hill, mound" (TUN)