slæmur

Icelandic

Borrowed from Danish slem, which borrowed it from Middle Low German slim (“bent, crooked”), from Old Saxon *slimb, from Proto-West Germanic *slimb, from Proto-Germanic *slimbaz (“slanted, crooked”). Possibly related to Lithuatian slim̃pti (“to sneak, stroll”).^[1]^[2]^[3]

slæmur (comparative verri, superlative verstur)

bad (not good)
Það eru slæmar fréttir. ― Those are some bad news.

Ég er slæmur í bakinu. ― I have a bad back.

strong declension

singular	masculine	feminine	neuter
nominative	slæmur	slæm	slæmt
accusative	slæman	slæma	slæmt
dative	slæmum	slæmri	slæmu
genitive	slæms	slæmrar	slæms
plural	masculine	feminine	neuter
nominative	slæmir	slæmar	slæm
accusative	slæma	slæmar	slæm
dative	slæmum	slæmum	slæmum
genitive	slæmra	slæmra	slæmra

weak declension

singular	masculine	feminine	neuter
nominative	slæmi	slæma	slæma
accusative	slæma	slæmu	slæma
dative	slæma	slæmu	slæma
genitive	slæma	slæmu	slæma
plural	masculine	feminine	neuter
nominative	slæmu	slæmu	slæmu
accusative	slæmu	slæmu	slæmu
dative	slæmu	slæmu	slæmu
genitive	slæmu	slæmu	slæmu

comparative

singular	masculine	feminine	neuter
nominative	verri	verri	verra
accusative	verri	verri	verra
dative	verri	verri	verra
genitive	verri	verri	verra
plural	masculine	feminine	neuter
nominative	verri	verri	verri
accusative	verri	verri	verri
dative	verri	verri	verri
genitive	verri	verri	verri

strong declension

singular	masculine	feminine	neuter
nominative	verstur	verst	verst
accusative	verstan	versta	verst
dative	verstum	verstri	verstu
genitive	versts	verstrar	versts
plural	masculine	feminine	neuter
nominative	verstir	verstar	verst
accusative	versta	verstar	verst
dative	verstum	verstum	verstum
genitive	verstra	verstra	verstra

weak declension

singular	masculine	feminine	neuter
nominative	versti	versta	versta
accusative	versta	verstu	versta
dative	versta	verstu	versta
genitive	versta	verstu	versta
plural	masculine	feminine	neuter
nominative	verstu	verstu	verstu
accusative	verstu	verstu	verstu
dative	verstu	verstu	verstu
genitive	verstu	verstu	verstu

^ Ásgeir Blöndal Magnússon — Íslensk orðsifjabók, 1st edition, 2nd printing (1989). Reykjavík, Orðabók Háskólans, page 901. (Available on Málið.is under the “Eldra mál” tab.)
^ Heidermanns, Frank (1993) “slimba-”, in Etymologisches Wörterbuch der germanischen Primäradjektive (Studia linguistica Germanica; 33) (in German), Berlin, New York: Walter de Gruyter, →ISBN, page 513
^ Vladimir Orel (2003) “*slimƀaz”, in A Handbook of Germanic Etymology‎^[1], Leiden, Boston: Brill, →ISBN, page 351