FromMiddle Englishdes-,dis-, fromOld Frenchdes-, fromLatindis-.

des-

1. Obsolete form ofdis-.(reversal ofsense ofsucceedingword)
2. (organic chemistry) Aremoval of a group from amolecule.

• sed,eds,Eds,Esd.,SDE,EDS,EDs,SED,eds.,DSE,ESD

FromSpanishdes-, fromLatindis-, fromProto-Indo-European*dwís.

des-

1. dis-;expresses separation, reversal, or negation.^[1]

   ‎des- + ‎agertu(“to appear”) → ‎desagertu(“to disappear”)

• “des-”, inEuskaltzaindiaren Hiztegia [Dictionary of the Basque Academy] (in Basque),Euskaltzaindia [Royal Academy of the Basque Language]
• “des-”, inOrotariko Euskal Hiztegia [General Basque Dictionary],Euskaltzaindia,1987–2005

Inherited fromLatindis-, fromProto-Indo-European*dwís.Doublet ofdis-, which was borrowed.

des-

1. indicates the negation of a verb;dis-,un-

   ‎des- + ‎fer(“to do”) → ‎desfer(“to undo”)

• “des-” inDiccionari de la llengua catalana, segona edició,Institut d’Estudis Catalans.
• “des-”, inGran Diccionari de la Llengua Catalana,Grup Enciclopèdia Catalana,2025.
• “des-” inDiccionari normatiu valencià,Acadèmia Valenciana de la Llengua.
• “des-” inDiccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.

des-

1. Alternative form ofdez-

FromFrenchdés-, fromLatindis-.

des-

1. dis-,de-

   Synonyms:fra-,af-

• IPA^(key):/dɛs/

des-

1. des-
2. dis-

des-

1. des-
2. dis-

Borrowed from Englishdis-, Frenchdés-, Italiandis-, Spanishdes-. Comparedis-, from the same origin. Decision no.251, Progreso IV.

• IPA^(key):/dɛs/

des-

1. Expresses the opposite of the root word.

   ‎des- + ‎honoro(“honor”) → ‎deshonoro(“dishonor”)

• Progreso III (in Ido),1910–1911, page19,92,150,215,216

• IPA^(key):/des/,[dəs],/dæs/

des-

1. de-;dis-

des-

1. Alternative form ofdis-

FromOld Frenchdes-.

des-

1. de-;dis-

• French:dé-,dés-

FromOld Frenchdes-, fromLatindis-.

des-

1. dis-

FromOld Occitandes-, fromLatindis-.

des-

1. de-;dis-

FromLatindis-.

des-

1. de-;dis-

• French:dé-,dés-
• Norman:dê-,d's-
• → English:des-

FromOld Galician-Portuguesedes-, fromLatindis-, fromProto-Indo-European*dwís.

• (Brazil)IPA^(key):(before a voiceless consonant)/des/,/d͡ʒis/,(before a vowel or voiced consonant)/dez/,/d͡ʒiz/
• (Portugal)IPA^(key):(before a voiceless consonant)/dɨʃ/,(before a voiced consonant)/dɨʒ/,(before a vowel)/dɨz/,/d͡z/

des-

1. un-;de-;dis-(forms verbs indicating the reversal of the prefixed verb)

   ‎des- + ‎ligar(“to turn on”) → ‎desligar(“to turn off”)

2. un-(forms nouns indicating the lack or opposite of the prefixed noun)

   ‎des- + ‎amor(“love”) → ‎desamor(“disdain”)

3. Misspelling ofdis-.

• dez-

Inherited fromLatindis-, fromProto-Indo-European*dwís.

• IPA^(key):/des/

des-

1. dis-,de-

   ‎des- + ‎face(“to do”) → ‎desface(“to undo”)

Inherited fromOld Spanishdes-, fromLatindis-, fromProto-Indo-European*dwís.Doublet ofdis-, which was borrowed.

des-

1. dis-;indicative of a negative

   ‎des- + ‎colgar(“to hang up (a phone)”) → ‎descolgar(“to pick up (a phone)”)

• “des-”, inDiccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8,Royal Spanish Academy [Spanish:Real Academia Española], 2024 December 10