Etymologically

Etymology and origin of the French word bikini

Confidence
Established
Formation
Eponym
First attested
1946 trademark registered by Louis Réard More words from the 20th century
Ultimate origin
French Bikini
Etymology tree
inherited borrowed derived
French bikini
English bikini

Pronunciation

Forms

bikini m (plural bikinis)[1]

Etymology

It is from French Bikini, the name of an atoll of the Marshall Islands in the Pacific, made famous in 1946 by the first American atomic bomb test there.[2][3][4] The TLFi gives the source as the Anglo-American name Bikini.[2] Wiktionary traces the place name to German Bikini, the colonial name of the atoll, from Marshallese Pikinni.[2][1] Etymonline reports a derivation of the local name from pik (“surface”) and ni (“coconut”), but calls it uncertain.[5] The name was given to the swimsuit in France soon after the test, because it was supposed to have an explosive effect, like the bomb.[3][4]

Earliest recorded meaning

Louis Réard registered bikini as a trademark on 20 June 1946, together with monokini.[2][3] Other dictionaries date the word to about 1947.[6][7]

Semantic evolution

The tiny two-piece swimsuit came into fashion just after the war and caused something of a scandal, so that some Catholic countries at first banned it.[3] The word passed into many other languages;[3][2][5] American English had it from 1948, after first using bikini for a huge explosion (1947).[3][2][5] The Petit Robert now marks the word as dated, and Rey notes that it calls up the years 1946 to about 1970.[8][3] Monokini, registered at the same time from a playful analysis of bikini as bi- “two” plus -kini, spread later for a swimsuit without a top.[3]

Timeline

  • 1946 – Louis Réard registers bikini and monokini as trademarks.[2][3]
  • 1947 – American English uses bikini for a huge explosion.[3]
  • 1948 – English takes the word for the swimsuit.[3][5]
  • 1954 – Simone de Beauvoir uses it in Les Mandarins.[2]

Meanings

Noun

  1. A very small women's two-piece swimsuit, with a top covering the breasts and briefs; a deux-pièces.[2][8][6]

Word family

  • monokini

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i Trésor de la langue française informatisé (2004), ATILF – CNRS & Université de Lorraine, atilf.fr/tlfi; electronic version of Imbs, Paul; Quemada, Bernard, eds. (1971–1994), Trésor de la langue française, Paris: CNRS / Gallimard
  3. ^ a b c d e f g h i j k Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  4. ^ a b Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  5. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  6. ^ a b Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  7. ^ Quemada, Bernard, ed. (1959–2006), Datations et documents lexicographiques (Base historique du vocabulaire français, BHVF), Paris: Klincksieck / CNRS / Champion; ATILF
  8. ^ a b Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
Cite this entry

“Bikini.” Etymologically, 14 Nov. 2026, etymologically.com/fr/bikini. Accessed 15 Nov. 2026.

Last edited on . ·