desu

Borrowed from Japanese です (desu, “be”), the polite form of the Japanese copula, found most often at the end of a sentence. Know Your Meme attributes its spread to 4chan memes of the Rozen Maiden character Suiseiseki who ends every sentence with desu (see also キャラ語尾).

• (Received Pronunciation) IPA^(key): /ˈdɛsuː/, /dɛs/
• Rhymes: -ɛsuː, -ɛs

desu

1. (slang, humorous, chiefly fandom slang) Used at the end of a sentence as an assertive particle.

   Synonym: o algo

   this desu ― this, tbh

   • 2002 March 20, Mahoronyan [username], “Re: I was wrong about Kokoro Library...”, in rec.arts.anime.misc‎^[1] (Usenet):

     My contribution desu.

   • 2003 January 30, Ethan Hammond, “Re: Nuku Nuku DVD Impressions”, in rec.arts.anime.misc‎^[2] (Usenet):

     Freaky desu.

   • 2006 February 22, sanjian [username], “Re: FMA 47 - Sealing the Homunculus”, in rec.arts.anime.misc‎^[3] (Usenet):

     Awww, but it was just getting fun, desu.

   • For more quotations using this term, see Citations:desu.

• duse, Dues, dues, Udes, sued, used

desu

1. Rōmaji transcription of です

desu f

1. inflection of desa:
   1. accusative/instrumental singular
   2. genitive plural