δεν

• δε (de)

Inherited from Byzantine Greek δέν (dén), from Ancient Greek οὐδέν (oudén, “in no way”).

• IPA^(key): /ˈðen/

δεν • (den) (negating particle)

1. not

   Δεν ήρθα χθες στο γραφείο. ― Den írtha chthes sto grafeío. ― I didn't come to the office yesterday.

   Δεν έρχεσαι μαζί μας; ― Den érchesai mazí mas? ― Won't you come with us?

2. not (with stress on the negative aspect of a statement)

   Πήρε δεν πήρε εκατό ευρώ. ― Píre den píre ekató evró. ― He didn't even get one hundred euros.

• This form is used when the following letter is a vowel or a plosive consonant (κ, τ, π, ξ, ψ, γκ, ντ, μπ). Elsewhere δε (de) may be used.
• δεν (den) and δε (de) are used with indicative verb forms, but μην (min) and μη (mi) are used with subjunctive verbs and imperatives.

• μην (min), μη (mi)

• δεν - Λεξικό της κοινής νεοελληνικής [Dictionary of Standard Modern Greek], 1998, by the "Triantafyllidis" Foundation.