δεν

Etymology
, from.

Particle

 * 1) not
 * 2) not
 * 1) not
 * 1) not

Usage notes

 * This form is used when the following letter is a vowel or a plosive consonant (κ, τ, π, ξ, ψ, γκ, ντ, μπ). Elsewhere may be used.
 * and are used with indicative verb forms, but  and  are used with subjunctive verbs and imperatives.