Verbs in consonant: there are some examples where the -i- turns to -e-, but this seems to have been an external phase.

Verbs in -a: only one case attested in present (VT41:13,18): órëa "is urging". Most -a verbs are verbs in -ya or -ta.

Past tense:

Verbs in consonant:

• -r (original), -m, -n add -ne directly, like tir- does.
• -t, -p, -c, -l have nasal infixion (or maybe metathesis): -nte, -mpe, -ñce, -lle: mat- "to eat" mantë, top/tup- "to cover" tompë/tumpë, tac- "to fasten" tancë, vil- "to fly" villë (*vilne would give *vilde).
• -r (from -d) same: -nde: rer- "to sow" rendë. So hyar- "to cleave", ser- "to rest", nir- "to press, thrust, force"
• -v (from -b) same: av- "to depart" ambë (QL:33). Unknown forms: lav- [DAB] "to yield, allow, grant", tuv- "to find", tyav- [KYAB] "to taste".
• some verbs omit the nasal and lengthen the stem vowel (all examples are early, only one in LotR): lav- "to lick" lávë (only LotR example in Namárie: undulávë), um- "not to do/be" úmë (early), car- "to do/make" (early) cárë (late regular) carnë, tul- "to come" túle (early).

Verbs in -a. Most are regular. Exceptions:

• (QL 1915) Quenya Lexicon has forms like sérë (serta- "to tie")
• (VT44:19 n.1 = QL 1915) ánë (anta- "to give")
• (late 1930's) Etym has ónë and ontanë (onta- "to beget, create")
• some verbs behave like verbs in consonant: ora- "to urge" has oranë and ornë (VT41:13). In fact many verbs in -a behave like this and maybe all have double forms: mapanë could be mampë, and an early form nampë [NAP/MAP] is attested (1915)!
• intransitive verbs in -ya drop the -ya: farya- "to suffice" farnë, lelya- [LED] "to go" lendë, ulya- "to pour (intransitive)" ullë. So possibly hwinya- "to swirl, gyrate" hwinnë, mirilya- "to glitter" mirillë, ranya "to stray" rannë, súya- "to breathe" súnë, tiuya "to swell, grow fat" tiunë, yerya- "to get old (intransitive)" yernë.
• transitive verbs in -ya are regular: ulya- "to pour (transitive)" ulyanë, so maybe yerya- "to wear out (transitive)" yeryanë.
• some verbs in -ta are treated as verbs in -at-: lahta- "?" lahantë, atalta "to collapse" atalantë (but later ataltanë), auta- [AWA] "to go away, leave" *awantë > oantë.
• but orta- [ORO] "to rise (intr), raise (tr)" [*orota] orontë (Etym, early drafts of Namárië) ortanë (Namárië)

Verbs in consonant: normally formed by prefixing a vowel similar to the stem vowel but short (augment by reduplication), lengthening the stem vowel if possible and appending -ie-. Sometimes the augment is absent, especially in poetry. It is not clear what to do with verbs with prefixes or initial vowel.

Verbs in -a: as verbs in consonant but drop the -a

• verbs in -ya: the -ya- is presumably dropped, so the perfect of tul- "come" and tulya- "lead" would have the same form utúlië

Verbs in -a loose the -a-. Exception: nauva "will be", present ná (VT42:34). Early material (Fíriel's song) has -áva- for these verbs.

VT43:14 (jan. 2002), discussing the Lord's Prayer, presents a new use of the verb na "to be": when it preceeds a noun (or adjective - my addition) or a verbal form, it means 'let it be'.

Applied to verbal forms, examples show na + future tense. The imperative particle á is also attested. For example "thy kingdom come" is expressed as:
  aranielya na tuluva
  aranielya á tuluva

The use of the aorist and imperative in -a is also attested: na túle (with vowel lengthening), na tule, á tula.

Preceding nouns or adjectives:
  na airë "be holy" (airë na "is holy")

Another way to express subjunctive is shown in Namárië, using nai + future tense:
  nai hiruvalyë Valinor ... nai elye hiruva. "may you find Valinor... may even you find (it)"

VT43 shows a few forms in -a for verbs in consonant in the earlier Ataremma I-IV: á tula "come!" for tul- (p.14), á cara "do!" for car- (p.15), ávatyara = á avatyara "forgive us" for avatyar- (p.18). But it has in the later texts (At.V-VI) the form in -ë: ámen apsenë "forgive us" for apsen- (p.18)

Negation using "not to be" + infinitive:

• aorist umë: umin, umil ... + infinitive
• present (unattested) úma: úman, úmal ... + infinitive
• past úmë: úmen, úmel ... + infinitive
• future úva: úvan, úval ... + infinitive

In the late 1960s, -ita (-ata?) was reinvented as aorist particular infinitive ending: carita "to do" (VT43:26 n.5, VT41:17 n.11, VT42:33-34).

A special attested case is the dative form, used to express "in order to": utúlien cenien Isil "I came (in order) to see the Moon"

Verbs in -a are unattested. But general rules would indicate that the -a and -ya endings are dropped.

Example of use: Valaron nurtalë Valinóreva "the Valar's (genitive) hiding (verbal noun) of Valinor (possessive)

Verbs in consonant: unknown, here postulated like -a verbs.

Verbs in -a: extant in -a-la with lengthening of the stem vowel where possible.

There may be a distinction between present (-ala) and aorist (-ila)?

Verbs in consonant append -ina and -na, with lengthening of the stem vowel if possible:

• verbs in voiceless plosive -t, -c, maybe -p:
  rácina "broken" (MC:223 Markirya), nótina "counted" (Fíriel's song).
• -r has -na and -ina (and -ima): vincarna "renewed (healed)" < vinya adj "new" + car- "make". But (VT43:15) carina "done", without lengthening, and also carima with -ima.
• -n and -m nouns possibly related to pas.partc: namna "statute" (nam- "to judge"), anna "gift" (anta-), onna "creature" (onta-).
• -l: melda adj "beloved, dear" (mel-) < **melna; colla (*col-) adj "borne, worn" noun "vestment, cloak" ?< **conla.

Verbs in -a: the situation is not very clear, both -a-ina and -a-na appear, as well as -nXa.

• attested verbs in -ta:
  hastaina "marred" < *hasta- (MR:254)
  *hostaina (hostainiéva "will be gathered") < hosta "to gather, collect, assemble" (Fíriel's song)
  aistana "blessed" < *aista "bless" (VT43:27ss AM III and AM IV)
  envinyanta "renewed (healed)" < envinyata "renew" (MR:405)
• attested in -ya: (possibly all adj unrelated to pas.part.) perina (perya- "to divide in middle, halve") [PER], yerna "worn, old" (yerya-) [GYER], halda "veiled, hidden" (halya-) [SKAL]. But (MR:326) mirruyaina/mirroyaina "incarnated" (mirroya-/mirruya-).
• attested in -a:
  valaina adj. "of or belonging to the Valar, divine" (Etym [BAL-]) < vala- "to order, have power (only applied to the Valar)" (WJ:403, 404) (as pas.ptc it would mean "ordered by the Valar")

One can use the negative particle lá, la followed by a verb:
  la navin (aorist sg1) caritalyas (infinitive+sg2) mára "I don't judge your doing it good"
  lá caritas (infinitive+obj.sg3) alasaila ná "not doing this is unwise"
  lá caritas (infinitive+obj.sg3) alasaila cé (uncertainty) nauva (future sg3) "no doing this may prove unwise"

lá can not normally take pronominal suffixes, except that, when a verb has been used in a previous clause, one can use lá + pronominal suffix to negate it. The tense remains that of the last verb used:
  elyë utúlië, lányë "you arrived, I didn't"