dé-

• Partially inherited from Middle French des-, from Old French des-, from a conflation of Latin dis- (“apart”) (ultimately from Proto-Indo-European *dwís) and Late Latin dē ex = dē- (“from”) + ex- (“out”); Compare the neological borrowing dis-.

• Partially borrowed from Latin dē- (“from”) in some cases; compare the inherited form de-.

• IPA^(key): /de/

• Audio:

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dé-

1. used to make antonyms (similarly to English prefixes un-, dis-)
2. reversal, removal (examples: défaire, découvrir, dégeler)
3. causation, setting in motion (examples: déclencher, démarrer, décoller)
4. away, from, off, apart

• dis-, dés-

• dá-, dó-

dé-

1. di-, bi-, duo-

• dé-altach

• Ó Dónaill, Niall (1977) “dé-”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN
• “dé-”, in New English-Irish Dictionary, Foras na Gaeilge, 2013–2025