A prefix for “snake” in The Etymologies of the 1930s derived from the root ᴹ√ANGWA of the same meaning, most notably an element in N. amlug “dragon” (Ety/ANGWA).
Noldorin
am
up
am
preposition. up, upwards, upon
amben
adjective. uphill, uphill; [ᴱN.] arduous, difficult, tiresome
am-
prefix. snake
amrûn
noun. uprising, sunrise, Orient, east
amarthan
adjective. fated
amben
adverb. uphill, sloping upwards
ambend
adverb. uphill, sloping upwards
ambend Archaic
adverb. uphill
ambenn
adverb. uphill, sloping upwards
ambenn
adverb. uphill
naneth
noun. mother
A noun for “mother” in The Etymologies of the 1930s derived from the (Noldorin-only?) root ᴹ√NAN (Ety/NAN). It apparently replaced archaic/poetic N. †emil (Ety/AM¹; EtyAC/AM¹).
Conceptual Development: The Gnomish Lexicon had a similar set of words for “mother”: G. maba, mabir, baba, and mavwin from the early root ᴱ√maƀ “something nice” (GL/57). The last of these appeared as G. mavwen “ancestress” in the Gnomish Lexicon Slips modifying that document, with an archaic meaning of “mother” and variant forms mafwyn and mavuin (PE13/115). In these slips, it seems the normal “mother” word was G. nân (originally glossed “father”) with variant nanwin (PE13/115). This last word is likely the direct precursor of N. naneth.
Neo-Sindarin: I would use S. emel from the late 1960s as the normal word for “mother” in Neo-Sindarin, but would retain N. naneth as a dialectical or more formal variant.
emil Archaic
noun. mother
a-
prefix. intensive prefix
barth
noun. fate
emil
noun. mother
lhûg
noun. snake, serpent
nana
noun. mother, mummy
naneth
noun. mother
An adjective (and adverb?) for “uphill” in The Etymologies of the 1930s, a combination of am “up” and N. penn “declivity, ✱slope” (Ety/PEN). It was contrasted with N. dadben “downhill, inclined, prone” (Ety/AM², PEN).
Conceptual Development: In The Etymologies it first appeared as N. amdenn, a derivative of ᴹ√DEN “hillside, slope”, but the meaning of this root was change to ᴹ√DEN “hole; gap, passage” (Ety/DEN), after which the form amben < ᴹ√PEN(ED) was introduced (see above). The earliest appearance of this word was in Early Noldorin Word-lists of the 1920s where it was ᴱN. amvenn “uphill; arduous, difficult, tiresome”, marked as both an adjective and adverb, along with a noun variant ᴱN. amvinn “slope, incline, hillside” (PE13/139, 159-160). This early Noldorin form was a combination of ᴱN. am “up” and ᴱN. benn “sloping”.
The Gnomish Lexicon of the 1910s had adverb G. amon “uphill, against stream” based on G. am “up, upwards, towards head of” and possibly generalized from the noun G. amon “hill” (GL/19).
Neo-Sindarin: Given its Early Noldorin use for “arduous, difficult, tiresome”, amben might be used colloquially in Neo-Sindarin with a similar sense for a thing that is difficult, analogous to English usages like an “uphill battle”: dagor amben.