Adverbs are an eclectic part of speech -- hard to define inclusion categories

dictionary form	English	notes
akkurat	exactly
aldeles	quite, absolutely
aldri (opp. alltid)	never
alene	alone
aller	the very....(best)
allerede	already
allikevel	yet, still
alltid (opp. aldri)	always
alt	already
altfor	too, all too
altsĺ	thus
antakelig / antagelig	presumably
attpĺtil	in addition, on top of that
baklengs	backwards
bare	only, just
bort / borte	(to) away / (at) away	to a place / in a place
brutto	gross (opp. netto)
cirka	approximately
da	then
dels	partially
delvis	partly
dengang	then, that time
deretter	after that
derfor	so, for that reason
derimot	on the other hand
dermed	thus
dessuten	besides
dessverre	unfortunately
desto	the .... the (jo ... desto)
dog	however
ei	not (archaic)
eksempelvis	for example
ellers	otherwise
enda	still
endog	even, very (formal)
engang	even, ikke engang 'not even'
enn	than
ennĺ	still, yet
etter hvert	gradually, little by little
etterpĺ	afterwards
for	too
for lengst	a long time ago
for sĺ vidt	for that matter, in a sense
for řvrig / forřvrig	besides, for that matter
forbi	past
forholdsvis	relatively
forhĺpentlig	hopefully
forhĺpentligvis	hopefully
forlengst	long ago
formelig	positively
forresten	besides, by the way
forsĺvidt	for that matter, in a sense
fortrinnsvis	preferably
fortsatt	still, continued
forřvrig / for řvrig	besides, for that matter
fram / framme	(to) forth / (at) forth	to a place / in a place
frem / fremme	(to) forth / (at) forth	to a place / in a place
fremdeles	still, even now
fřlgelig	consequently
fřrst	first
ganske	quite
gjerne	gladly	heller - helst
gradvis	gradually, by degrees
halvveis	halfway, midway
hit / her	(to) here / (at) here	to a place / in a place
heldigvis	luckily
heller	rather, somewhat	comparative of gjerne
helst	preferably	superlative of gjerne
henholdsvis	respectively
hjem / hjemme	(to) home / (at) home	to a place / in a place
hvor	where
hvorav	of whom, of which
hvordan	how
hvorfor	why
hřyst	highly, most
i alle fall, iallfall	at any rate, at least
i dag	today
i gang	going, established
i hvert fall	in any case
i stedet	instead
i stedet, isteden	instead
iallfall	at any rate, at least
igjen	again, back
ikke	not
ille	bad, awful verre, verst
imidlertid	nevertheless, however
inn / inne	(to) in / (at) in
innledningsvis	by way of introduction, at the beginning
isteden	instead
jammen	indeed, certainly
jevnlig	frequently, often
jo	yes, certainly
kanskje	perhaps
kun	only
lenge	long	for a long time. comp: lenger, super: lengst
like	just as, equally
likeledes	likewise, as well
likesĺ	likewise, the same
likevel	yet, still, nevertheless
liksom	like, somehow, kind of
lite	little, few	lite sannsynlig "not very probable"
litt	a little	jeg snakker litt norsk "just a bit"
lovlig	legal, lawful, legitimate
massevis	lots of, great numbers of
med rette	rightly ?
meget	very, quite
midt	in the midst of
minus	minus
muligens	possibly, perhaps
naturligvis	naturally
ned / nede	(to) down / (at) down
nemlig	namely, in fact, right
neppe	hardly, scarcely
nest	next
nesten	nearly, almost
netto	net (opp. gross)
nettopp	just, exactly
noenlunde	fairly, reasonably
noensinne	ever, at any time
nok	enough, supposedly
noksĺ	quite, rather
nylig	newly, recently
nćre	nearly
nřdvendigvis	necessarily
nĺ	now
nĺr	when
ofte	often
og	and
ňg	also
ogsĺ	also
om igjen	again
omlag	approximately
omme	over, at the end
omsider	at last, finally
omtrent	approximately
opp / oppe	(to) up / (at) up	to a place / in a place
opp ned	upside down
overalt	everywhere
overens	in agreement
overhodet	at all, altogether
pluss	plus
rasende	extremely
rett og slett	completely
riktig nok, riktignok	to be sure
saktens	no doubt, admittedly
sammen	together, jointly
sannelig	indeed, truly
sannsynligvis	probably, in all likelihood
selv	even	selv min far - even my father
selvfřlgelig	of course
siden	ago	for ett ĺr siden - one year ago
simpelthen	simply
sist	last
sjelden	seldom (opp ofte)
sjřl - see selv	even	selv min far - even my father
slik	in this / that way
snart	soon
straks	immediately
sćrdeles	especially, particularly
sĺ	so
sĺ pass	so much so...
sĺ vidt	only just, as far as..
sĺdan	thus, such
sĺledes	so, thus
sĺnn	such, that / this kind of thing
sĺpass	so, about
temmelig	fairly, rather, sort of
tidvis	periodically
tildels	partially
tilfeldigvis	by chance, accidently
trolig	truly, probably
trutt	steadily
tvers	across
tvert	across, straight
tydeligvis	obviously, evidently
ut / ute	(to) out / (at) out	to a place / in a place
utelukkende	exclusively
vanligvis	usually
vel	well, indeed
veldig	very
visstnok	probably
ĺrevis	for years

Et forms of adjectives can be used as adverbs (Hun synger pent ."She sings beautifully", Han sitter stille "He's sitting quietly/" Those adverbs are not listed above.
Adverbs like 'hjem / hjemme' and 'dit / der' have one form representing motion to a place, one form for location in a place.
Many adverbs end in -vis (vanligvis).

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