Note that most adjectives can be converted into an adverb by replacing the stem. See Lilitika Grammar for various adverb stems.

abavya adv. Without deviation; unerringly; unbendingly.
aklatéú adv. Nonetheless.
alatedai adv. Continuously; unabatedly.
alíkinai adv. Contrarily.
alya adv. Not to; see alez-.
atetikai adv. Childishly.
da (2) adv. Indicates interrogative; see dan.
dan adv. Indicates interrogative; the sentence is a question.
dekatúrya adv. Presumably.
dzafarobya adv. Arguably, askably, debatably, questionably.
dzuvê ex. With regards to the situation at hand; what is currently being done; presently; now; already; anyway.
ebístessoya adv. Moderately; to a medium degree.
ekashya adv. Acting from purest intentions.
ékastai adv. Seldom.
ekhtekai adv. Influentially.
ekhtekya adv. Influentially.
émíonai adv. Conventionally.
envenakoya adv. Overnight.
enzeméú adv. Moreover.
enzigya adv. Certainly.
érahissarya adv. Reasonably; in a manner able to be reasoned about.
érahissorya adv. Reasonably; due to seeing reason.
érezai adv. Mostly; predominantly; largely.
estúbarya adv. Remarkably.
étemai adv. Considerably; to a noteworthy degree.
etheméú adv. Notably.
evakekhíya adv. Permanently.
felsai adv. Forwardly; forth; frontward [Íomanazinení].
felséya adv. Forwardly; forth; frontward [Sarasí].
gentalurai adv. Instantly.
gentalya adv. Instantly.
gentalya (2) adv. Promptly.
gorai adv. Automatically.
haitinsholya adv. Proportionally.
hedí pm. About, regarding, which speaks of.
hemai adv. Even, still (emphasising a comparative).
iféya adv. Want to; see ifez-.
íléú m. As if.
ílokhurai adv. Desperately.
iltanéú adv. Consequently.
ishtaréú adv. Long ago; used at the beginning of a story written in the aorist or past tense.
kantya adv. Purely.
kedya adv. Roughly; in a coarse or forceful manner.
kefasedya adv. Loosely, broadly.
keghanai adv. Honestly; bluntly; frankly.
keghanéú adv. Honestly; bluntly; frankly.
keghanya adv. Honestly; bluntly; frankly.
kelai adv. Extremely; very much (Archaic).
kelanai adv. Extensively.
kellíksedéú adv. Ironically.
kelya adv. Extremely; very much (Classical).
kerai adv. Together (in association or combination).
keryú adv. Distributive; the next adjective applies to the following nouns and genitives.
ketelai adv. Together (at the same time and place).
khosarya adv. By far.
kílostéú adv. Namely.
kipabvedya adv. Explicitly.
klúí kelsúya adv. Large-scale; en masse.
korréú adv. Reportedly.
lainya adv. Extremely; intensely.
lénúya adv. In part-time; in the afternoon.
les isalte adv. Presently.
ludtirai adv. Precisely.
lúmotéú m. In the same fashion; similarly performed.
mapoai adv. Freely.
mapoya adv. Freely.
mein adv. Indicates the middle voice; the subject is taking part or interest in an action.
mentikíya adv. Respectively.
míredya adv. Peculiarly; idiosyncratically; personally.
mítevíya adv. Primarily.
mítúya adv. In part-time; in the morning.
natya adv. Undo; see nato-.
níyú adv. Even ~; one might go so far as to say ~; perhaps maybe ~.
nohenai adv. Persistently.
nohenya adv. Regardless.
noyú adv. Still; even now.
okantai adv. Emotionally.
ossiya adv. Compelled by universe to; see ossez-.
pensya adv. For only some of the time; in part-time; only occupying part of a timeframe.
réya adv. Compelled to; see rez-.
rezyarai adv. Readily [non-idiomatic].
rizeya adv. Required to; see riz-.
rokarya adv. Potentially.
sarsúai adv. Fortunately; luckily [Íomanazinení].
sarsúya adv. Fortunately; luckily [Sarasí].
shúessolya adv. Essentially.
soleriñkya adv. Efficiently.
súkai adv. Appropriately, fittingly, equally.
sur proc. If.
survanai adv. Forth; forwardly [Íomanazinení].
súrvanai adv. Lately.
súrvanéu adv. Lately.
súrvanya adv. Lately.
tamaksai adv. Consistently.
temerai adv. Firmly.
temeya adv. Firmly; classical form of temerai.
thelanya adv. Peculiarly; idiosyncratically; personally.
topekúmai adv. Critically.
tshakai adv. Hopefully.
tshakaya adv. Hopefully.