bilmiyorsun

Bilmiyorsun is a Turkish verb form that translates to “you do not know.” It is the second-person singular present negative of the verb bilmek, meaning to know. In everyday Turkish, bilmiyorsun is used to state that the listener lacks knowledge about a fact or situation.

Linguistic and grammatical notes: The form is constructed from the verb stem bil- with the negative marker and the second-person singular personal ending. Turkish uses a single present tense form to express current knowledge, and bilmiyorsun specifically conveys that you do not know something at the moment. It can appear in declarative sentences, questions framed as statements, or in response to information someone claims to have.

Usage and nuance: Bilmiyorsun can serve to challenge or correct someone’s assumption, as in a simple statement like “Hangi gün olduğunu bilmiyorsun” (You don’t know which day it is) or in more emphatic contexts such as “Bilmiyorsun ki bu önemli” (You don’t know that this is important). It is also common in dialogues, storytelling, and informal speech to express ignorance, surprise, or a need for clarification.

In Turkish, verb forms like bilmiyorsun illustrate how negation and person are conveyed through suffixes and vowel harmony, without changing the root meaning of the verb. While bilmiyorsun is most often understood as a straightforward negation of knowledge, its tone can vary with context, ranging from neutral factual statements to mild admonitions.