This article offers principles to be followed when editing οὔκουν and οὐκοῦν. The distinction between these words is supported by the ancient grammarians, but manuscript readings oscillate to such a degree that modern editors often do not trust them. The most common principles thus far available are those established by Kühner–Gerth and Denniston. Some are so subjective, however, that editors do not always agree on the accentuation of a non-negligible number of instances. This article takes into account the pragmatic contexts in which the particle is used in Attic drama to effect a distinction by applying a conversation analytic methodology to their interpretation. All instances appearing in the extant plays of Aeschylus, Sophocles, Euripides and Aristophanes have been analysed.