This is a simple exchange I had on twitter:

a: Mi estas lacata.

b: Dormu!

a: Bona ideo. Mi dormis. Dankon!

Why not "Bonan ideon. Mi dormis. Dankon!"?

1 Answer 1


Maybe because it means : (Estas) bona ideo. Mi dormis. (Mi donas) dankon (al vi)!

  • This is correct. In Esperanto wishes such as ”bonan tagon” etc. always take the accusative as “mi deziras (al vi)” is implicit.
    – miestasmia
    Commented Jan 1, 2018 at 13:34
  • The full sentence would be Tio estas bona ideo. Without the tio it just means "there is a good idea (out there somewhere.)" Commented Jan 2, 2018 at 13:23

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