þrítugur

Icelandic

Etymology

From þrí- (“three”) +‎ tugur (“group of ten”).

Adjective

þrítugur (not comparable)

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

Usage notes

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

Declension

positive forms of þrítugur

strong declension (indefinite)	singular	masculine	feminine	neuter
	nominative	þrítugur	þrítug	þrítugt
	accusative	þrítugan	þrítuga
	dative	þrítugum	þrítugri	þrítugu
	genitive	þrítugs	þrítugrar	þrítugs
	plural	masculine	feminine	neuter
	nominative	þrítugir	þrítugar	þrítug
	accusative	þrítuga
	dative	þrítugum
	genitive	þrítugra
weak declension (definite)	singular	masculine	feminine	neuter
	nominative	þrítugi	þrítuga	þrítuga
	acc/dat/gen	þrítuga	þrítugu
	plural (all-case)	þrítugu

Related terms

• tugur
  • tvítugur
  • fertugur
  • fimmtugur
  • 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), “þrítugur”, 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
• “þrítugur” in the Dictionary of Modern Icelandic (in Icelandic) and ISLEX (in the Nordic languages)