þrítugur

== Icelandic == === Etymology === From þrí- (“three”) +‎ tugur (“group of ten”). === Adjective === þrítugur (not comparable) thirty years old; thirty, tricenarian thirty fathoms tall/deep/long/across/etc. (which is thirty of a unit) ==== Usage notes ==== Also used as a noun in the neuter singular, e.g. vera um þrítugt (“be about thirty”), hafa tvo um þrítugt (“be thirty-two”). ==== Declension ==== ==== Related terms ==== ==== See also ==== ræður sjöræður áttræður níræður tíræður tólfræður ==== References ==== Ásgeir Blöndal Magnússon (1989), “þrítugur”, in Íslensk orðsifjabók, Reykjavík: Árni Magnússon Institute for Icelandic Studies, →ISBN (Available at Málið.is under the “Eldri orðabækur” tab.) Kristín Bjarnadóttir, editor (2002–2026), “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)