From Wiktionary, the free dictionary

From Latin extra (“outside, except, beyond”, adverb and preposition), from exter (“being on the outside”).

extra-

1. Outside of, beyond.

   extramarital: outside of marriage

• (beyond): trans-, para-, hyper-, ultra-, out-, preter-

• intra-
• inter-

• extro- (outward)

• “extra-”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

• Artex, retax, taxer

Borrowed from Latin extra.

• IPA^(key): (Central, Balearic) [ˌɛks.tɾə]
• IPA^(key): (Valencia) [ˌeks.tɾa]

extra-

1. extra-

• “extra-”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007
• “extra-”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2026
• “extra-” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
• “extra-” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.

extra-

1. extra-

extra-

1. extra-

   Antonym: intra-

• estra-

Borrowed from Latin extra. Doublet of stra-, which was inherited.

extra-

1. extra-

Borrowed from Latin extra (“outside, except, beyond”, adverb and preposition), from exter (“being on the outside”).

extra-

1. extra-

Learned borrowing from Latin extrā-, from extrā (“outside, beyond”).

extra-

1. extra-

• “extra-”, in Dicionário Aulete Digital (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2026
• “extra-”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026

Borrowed from Latin extrā-, from extrā (“outside, beyond”).

extra-

1. extra-

• “extra-”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025

extra-

1. extra-

   Antonym: intra-

• extra- in Svensk ordbok (SO)
• extra- in Svenska Akademiens ordbok (SAOB)