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fortress

nounverbcommon in dialogue

  • United Kingdom//ˈfɔː.tɹəs//
  • United States//ˈfoɹ.tɹɪs//
  • United States//ˈfoɹ.tɹəs//
  • //ˈfɔ(ː)ɹ.tɹəs//

A fortified place; a large and permanent fortification, sometimes including a town; for example a fort, a castle; a stronghold; a place of defense or security.

noun

  1. 1

    A fortified place; a large and permanent fortification, sometimes including a town; for example a fort, a castle; a stronghold; a place of defense or security.

    Like the Mesolithic age of 10,000-8000 B.C., the period 6000-4000 B.C. seems to be one of the fall of fortresses and the rise of pastoral nomadism.

  2. 2

    A position that, if obtained by the weaker side, will prevent penetration by the opposing side, generally achieving a draw.

Etymology

Early 14 c., from Old French forteresce, forteresse, forterece (“strong place, fortification”), variant of fortelesse, from Medieval Latin fortalitia, from Latin fortis (“strong”) (see fort) + -itia, added to adjectives to form nouns of quality or condition. French -ess, from Latin -itia is also in words such as duress, prowess, largesse and richesse. For change of medial -l- to -r- in Old French, compare orne (“elm”) from ulmus; chartre from cartula and chapitre from capitulum. First attested in the 12th century.

verb

  1. 1

    To furnish with a fortress or with fortresses; to guard, to fortify.

    Honour and Beautie in the owners armes, / Are weaklie fortreſt from a world of harmes.

Forms

plural
fortresses
past tense
fortressed
past participle
fortressed
present participle
fortressing
third person singular
fortresses
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).