fimmtugur

Icelandic

Etymology

From fimm (“five”) +‎ tugur (“group of ten”).

Adjective

fimmtugur (not comparable)

1. fifty years old; fifty, semicentenarian, quinquagenarian
2. fifty fathoms tall/deep/long/across/etc. (which is fifty of a unit)

Usage notes

• Also used as a noun in the neuter singular, eg. vera um fimmtugt (“be about fifty”), hafa tvo um fimmtugt (“be fifty-two”).

Declension

positive forms of fimmtugur

strong declension (indefinite)	singular	masculine	feminine	neuter
	nominative	fimmtugur	fimmtug	fimmtugt
	accusative	fimmtugan	fimmtuga
	dative	fimmtugum	fimmtugri	fimmtugu
	genitive	fimmtugs	fimmtugrar	fimmtugs
	plural	masculine	feminine	neuter
	nominative	fimmtugir	fimmtugar	fimmtug
	accusative	fimmtuga
	dative	fimmtugum
	genitive	fimmtugra
weak declension (definite)	singular	masculine	feminine	neuter
	nominative	fimmtugi	fimmtuga	fimmtuga
	acc/dat/gen	fimmtuga	fimmtugu
	plural (all-case)	fimmtugu

Related terms

• tugur
  • tvítugur
  • þrítugur
  • fertugur
  • sextugur
  • sjötugur
  • nítugur

See also

• ræður
  • sjöræður
  • áttræður
  • níræður
  • tíræður
  • tólfræður

References

• Ásgeir Blöndal Magnússon (1989) Íslensk orðsifjabók, Reykjavík: Árni Magnússon Institute for Icelandic Studies, →ISBN (Available at Málið.is under the “Eldri orðabækur” tab.)
• Kristín Bjarnadóttir, editor (2002–2025), “fimmtugur”, in Beygingarlýsing íslensks nútímamáls [The Database of Modern Icelandic Inflection] (in Icelandic), Reykjavík: The Árni Magnússon Institute for Icelandic Studies
• Mörður Árnason (2019) Íslensk orðabók, 5th edition, Reykjavík: Forlagið
• “fimmtugur” in the Dictionary of Modern Icelandic (in Icelandic) and ISLEX (in the Nordic languages)