(adverbial prefix) an-. 3)
Sindarin
-ad
suffix. noun-suffix
-ad
suffix. dual
-ad
suffix. gerund
an
to
-ed
suffix. gerund
an
preposition. to, towards, for
With suffixed article and elision in aglar'ni Pheriannath
an
to
_ prep. _to, for. naur an edraith ammen! 'fire [be] for rescue/saving for us'. aglar an|i Pheriannath 'glory to all the Halflings'.
cair
noun. ship
cair
noun. ship
na
to
e _ prep. _to, towards (of spacetime). n' before vowels. >> nan 2
na
preposition. to
prep. to Na-chaered palan-díriel lit. "To-distance (remote) after-gazing" >> na-chaered, nan 2
an
to
(prep.) an (+ nasal mutation), with article ni "to the" (+ nasal mutation in plural).
cair
ship
cair (in compounds cír-) (i gair, o chair), pl. cîr, i chîr; coll. pl. ciriath.
cair
ship
(in compounds cír-) (i gair, o chair), pl. cîr, i chîr; coll. pl. ciriath.
cirion
shipman
(i girion) (sailor), pl. ciryn (i chiryn), coll. pl. cirionnath.
círdan
shipbuilder, shipwright
(i gírdan, o chírdan) (shipwright), pl. círdain (i chírdain).
The Sindarin dual was almost certainly derived from the same primitive form ✶ata as the Quenya dual ending -t, indicating this ending was ancient in form. The other Quenya dual, -u, would not have been active in Sindarin since final vowels were lost.
Tolkien stated (Let/427) that this ending was archaic and lost, but did not state when it disappeared. The ending may have still been active in the First Age. The ending appears in the day-name Orgaladhad “Day of the Two Trees”. Since the Sindar had no direct experience with the trees, this word was likely adopted from its Quenya cognate Aldúya when the Noldor and Sindar were reunited.