-uva future tense ending. In avuva, caluva, cenuva, hiruva, (en)quantuva, (en)tuluva, laituvalmet, lauva, maruvan, termaruva, tiruvantes. A final -a drops out before the ending -uva is added: quanta- "fill", future tense quantuva (PE17:68). A verbal stem in -av- may be contracted when -uva follows, as when avuva is stated to have become auva (VT49:13). Origin/etymology of the ending -uva, see VT48:32. In VT49:30, the future tense of the verb "to be" is given as uva, apparently the future-tense "ending" appearing independently, but several other sources rather give nauva for "will be" (see ná #1).
Quenya
termar-
stand
termar-
verb. to stand, *endure, last, (lit.) through-abide
terma
noun. passage, aperture, pass
-uva
fill
mar-
abide, be settled or fixed
mar- vb. "abide, be settled or fixed" (UT:317); maruvan "I will abide" (mar-uva-n "abide-will-I") (EO). Cf. termar-.
quanta-
fill
quanta- (2) vb. "fill" (PE17:68), cf. enquantuva "will refill" in Namárië. This verb seems to spring from a secondary use of the adjective quanta "full" as a verbal stem, whereas the synonym quat- (q.v.) is the original primary verb representing the basic root KWAT.
quat-
fill
quat- vb. "fill" (WJ:392), future #quantuva "shall fill" (enquantuva "shall refill") (Nam, RGEO:67) Irrespective of the prefix en- "re", the form enquatuva (VT48:11) displays the expected future tense of quat-. The Namárië form enquantuva seems to include a nasal infix as well, which is possibly an optional feature of the future tense. On the other hand, PE17:68 cites the verb as quanta- rather than quat-, and then the future-tense form quantuva would be straightforward.
tar-
stand
#tar- (3) vb. "stand", attested in the past tense: tarnë (PE17:71)
tar-
verb. to stand
The root √TAR is translated “stand” in notes from around 1967 (PE17/186), and its past form tarne “stood” appears in a sentence from the same document: sanome tarne Olórin, Aracorno... “there stood Gandalf, Aragorn...” (PE17/71).
Conceptual Development: Early Qenya Word-lists of the 1920s had ᴱQ. hyā- “stand” (PE16/132). The Quenya Verbal System (QVS) of 1948 had a past form ᴹQ. tolle “stood” (PE22/117) and an inceptive verb ᴹQ. tolu- “stand up” (PE22/114) clearly based on ᴹ√TOL (Ety/TOL²), but later in the same document had ᴹQ. thar- “stand” based on the root ᴹ√THAR (PE22/126), probably a precursor to later tar- “stand” < √TAR.
tyul-
verb. to stand
A neologism coined by Alex Grigny de Castro in PPQ (PPQ) from the early 2000s, based on the root ᴹ√TYUL “stand up (straight)”, along with an intransitive variant ᴺQ. tyulya- and a transitive form ᴺQ. tyulta- (inspired by ᴱQ. tyulta-) suggested by Helge Fauskanger. I’d stick to attested tar- instead for “stand (intr.)”, which was published in 2007.
termar- vb. "stand" meaning last (ter-mar- "through-abide"); future tense termaruva in CO.