Comics

sjúkrakassi - first aid kit
alveg - completely
glæsilegur - splendid
vonandi - hopefully
gosbrunnur - fountain
gemsi - cell phone
reikningur - bill
félagi - comrade
endurraða - unscramble
andlit - face
vinka - wave (to someone)
reið - ride
engi - meadow
báðir - both
einstakur - unique, single
vera andfúlli - have bad breath
hvass - harsh, keen, windy
hvöss gagnrýni - harsh criticism
hvöss sjón - keen eyesight
Skulu - shall, need
við skulum koma okkur - let's go
þegar - immediately, directly, when
fellibylur - hurricane, typhoon
læti - tumult, noise
láta öllum illum látum - behave badly
gaur - gangling fellow, pole
borga - pay
gemsareikning - cell phone bill
lofa - promise, praise, allow
aukakostnað - increasing/excess costs
fullvissa - assure
hrína - cry, wail
hindra - hinder
útsýni - view
völlur - field, lawn, airport
nef - nose, beak
æðri - higher, more exalted
endi - end

Hver skrifaði öll SMS-in? - Who wrote all the SMS?
Hver lofaði að taka á sig allan aukakostnað? - Who promised to take care of all excess costs?
Og hver á þá að borga reikninginn? - And who should pay the bill then?

Taken from comics in the newspaper.
Couldn't log into any "secure" sites like this for a while so I couldn't post.

Science

gæði - quality, kindness
svif - flight
svifryk - "flight dust", particulate matter
Miðlungs - mediocre, moderate
viðmið - norm
unninn - processed
þróun - progress, evolution
Einungis - only, merely
vernd - protection
mörk - 250g (about infants), forest
leyfilegur - allowed
viðbragð - jump, jolt
viðbragðsfljótur - quick to react
teymi - tern
5pá - prophecy, weather forecast
vera - creature, stay, reality
ákveða - decide
mótvægi - counterbalance
Mæling - measurement
mæla - measure, survey
gatnamót - intersection
mengun - pollution
ögn - particle, trifle
þvermáli - diameter
uppruni - origin, source
eftirfarandi - following
malbik - asphalt
bremsluborði - break lining
sót - soot
jarðvegur - soil
samgöngur - transport, communications
samgöngutæki - means of transportation
sjálfvirkar - automatic
færanlegur - moveable
valmynd - menu
orka - power, energy
orkunýting - energy consumption/efficiency
fjúka - be blown away
nálgast - approach
gagn use, (plural) data/documents, evidence
raun - experience, trial, truth, distress
meðal tal - mean value

From here.

School

Fyrri - first of two, previous, earlier
Seinni - later, slower
Heimaverkefni - homework
Notkun - use, application
Hópur - group, crowd
Námskeið - course
Námsefni - curriculum, syllabus
Ljósrit - photocopy
Stafróf - alphabet
Stefnumót - rendez-vous, date, appointment
Sendiferð - errand
Afhenda - "turn in", deliver, hand over
Fremur - rather
Lesefni - reading matter
Nám - studying, studies
Sjálfsnám - private study
Rit - work, literary work
Gilda - be valid
Skriflegur - written
Próf - exam, hearing
Skipting - division
Þjálfun - training, exercise, practice
Tal - speech, conversation, number
Misseri - semester

Taken from school schedule Word documents.

Food, household supplies

Hollur - healthy, loyal, good
Rófa - rutabaga, yellow turnip
Allur - whole, all
Kleina - cruller, twisted doughnut
Grófur - coarse, rough
Ódýr - cheap
Slátrun - slaughter
Heill - undamaged, healthy, whole, sincere
Skrokkur - body, hull, frame
Saga - saw
Hryggur - back, spine, ridge
Flokkur - group, class
Lærissneiðar - slice of leg of lamb
Rauðspretta - plaice
Roð - fish skin
Núðlur - noodles
Ökkli - ankle
Viskustykki - tea towel
Vörn - defence
Munnir - mouth
Gúmmi - rubber
Rafgeymir - battery
Uppþvotalögur - cleaning liquid
Bleiur - daiper/nappy
Nýra - kidney
Pinni - stick, peg, pin
Frostpinnar - ice lollies
Kubbur - block of wood, chip
Staur - post, pole
Hagkvæmur - economical, efficient
Örbylgja- microwave
Örbylgjupopp - popcorn
Hafur - billy-goat
Haframjöl - oatmeal
Púði - cushion, pillow
Sykurpúði - marshmallow
Kex - cracker

Taken from a sale advertisement in the mail from Krónan.