===Alternative forms===
* {{qualifier|obsolete}} {{lalt|is|svöfn||obsolete}}
===Etymology===
{{PIE root|is|ine-pro|*swep-}}
From {{derinh|is|non|svefn}}, from {{derinh|is|gem-pro|*swefnaz}}, from {{derinh|is|ine-pro|*swepno-swépnos}}, an extension of {{m|ine-pro|*swep-||sleep}}.
===Pronunciation===
* {{IPA|is|/svɛpn/|lang=is}}
*: {{rhymes|is|ɛpn|langs=is1}}
===Noun===
# [[sleep]]
*#: {{ sense|sleep}} {{lant|is|vaka }}, {{l|is|vakning}} ▼
# {{lb|is|archaic}} a [[dream]]
====Declension====
{{is-decl-noun-m-s1|sv|e|fn|i=i|pl=-}}
▲* {{sense|sleep}} {{l|is|vaka}}, {{l|is|vakning}}
====Derived terms====
{{der3|is|title=in phrases
{{der-top4}}
* |{{l|is|djúpsvefnsvefninn langi||death}}
* |{{l|is|falla í svefn}} (|t=to [[fall asleep]]-}} [[sofna]]){{q|uncommon}}
* |{{l|is|í fasta svefni}} (|t=to be [[sound asleep]], að [[steinsofa]])}}
* |{{l|is|leggjast til svefns}} (|t=to [[go to bed]], [[fara í háttinn]])}}
|{{l|is|sofna svefninum langa}}/{{l|is|sofna hinsta svefni|t=to [[die]]}}
* |{{l|is|sofnatala svefninumupp langa}}/úr {{lsvefni|is|sofna hinsta svefni}} (t=to [[die]],sleep [[deyjatalk]])}}
}}
* {{l|is|svefnbekkur}}
{{der3|is|title=in compound words
* {{l|is|svefnfriður}}
▲* |{{l|is| smásvefndjúpsvefn}}
{{der-mid4}}
* |{{l|is|svefnherbergismásvefn}}
* |{{l|is|svefnklefisvefnbekkur}}
* |{{l|is|svefnlaussvefnfriður}}
* |{{l|is|svefnléttursvefnherbergi|g=n|t=bedroom}}
* |{{l|is|svefnleysisvefnklefi}}
* |{{l|is|svefnleysislegursvefnlaus}}
* |{{l|is|svefnlyfsvefnléttur}}
|{{l|is|svefnleysi|g=n|t=insomnia}}
{{der-mid4}}
* |{{l|is|svefnmeðalsvefnleysislegur}}
* |{{l|is|svefnmóksvefnlyf}}
* |{{l|is|svefnpillasvefnmeðal}}
* |{{l|is|svefnpokasvefnmók}}
* |{{l|is|svefnpurkasvefnpilla}}
* |{{l|is|svefnrósvefnpoka}}
|{{l|is|svefnpurka|g=f|t=sleepyhead, lie-a-bed, sluggard}}
* {{l|is|svefnrof}}
* |{{l|is|svefnsófisvefnró}}
|{{der-mid4l|is|svefnrof}}
* |{{l|is|svefnsýkisvefnsófi}}
* |{{l|is|svefntaflasvefnsýki}}
* |{{l|is|svefnugursvefntafla}}
* |{{l|is|svefnvanasvefnugur}}
* |{{l|is|svefnþungursvefnvana}}
|{{l|is|svefnþungur}}
* {{l|is|tala upp úr svefni}} (to [[sleep talk]], að tala [[sofandi]])
* |{{l|is|vetrarsvefn}}
}}
{{der-bottom}}
====Related terms====
* {{l|is|sofa}}
----
==Old Norse==
===Alternative forms===
* {{alter|non|sömn}} {{a|non|Trønder dialect of Old Norwegian}}
===Etymology===
{{PIE root|non|ine-pro|*swep-}}
From {{inh|non|gem-pro|*swefnaz}}, from {{derinh|non|ine-pro|*swepnosswépnos}}, an extension of {{m|ine-pro|*swep-||sleep}}. Cognate with {{cog|osx|sweban|sweƀan}}, {{cog|ang|swefn}}, {{cog|en|sweven}}. The Indo-European root also led to {{cog|grc|ὕπνος}}, {{cog|la|somnus}}, {{cog|sga|suan}}, {{cog|cu|съпати|tr=sŭpati}}, {{cog|ru|спать}}, {{cog|lv|sapnis}}.
===Noun===
# [[sleep]]
▲==== AntonymsDeclension====
{{non-decl-m-a|svefn|ns=svefn}}
====Related terms====
* [[sofa]]
* [[sofna]]
====Descendants====
{{top2}}
* {{desc|dais|søvn}} {{gsvefn|csvöfn}}
* {{desc|fo|svøvnur}}
* Faroese: [[svøvnur]] {{g|m}}
* {{desc|isnn|svefnsvebn|g=m}}, {{lsvemn|issvevn|svöfnsvøbn|g=msvømn|sømn|søvn}}
* {{desc|ovd|swemmen}} <!--
{{mid2}}
* {{desc|nbgmq-bot|søvnsomn|sømn}}-->
* {{desc|nngmq-osw|svevn}} {{gsyfn|m}}, {{l|nn|søvnsømn}}
** {{desc|sv|sömn}}
* Swedish: [[sömn]] {{g|c}}
* {{desc|gmq-oda|syfn|søfn}}
** {{desc|da|søvn}}
*** {{desc|nb|søvn}}
* {{desc|gmq-gut|svivn|syvn|svämn|svömn}}
{{bottom}}
===References===
* {{R:Zoega}}
* {{cite-book|year=1899|author=M. Hægstad|title=Gamalt trøndermaal : upplysningar um maalet i Trøndelag fyrr 1350 og ei utgreiding um vokalverket|page=1}}</ref>
|