Bilmesi

Bilmesi is a noun form in Turkish derived from the verb bilmek, meaning “to know.” It is formed with the gerund suffix -mesi, which turns a verb into a noun expressing the act or state of the verb. The bilmesi form can refer to the fact that someone knows and can function within clauses as a subject, object, or complement. With possessive clitics, it can also convey “his/her knowing” or “the fact that he/she knows.”

Common uses include noun phrases such as bilmesi gerekenler, meaning “the things that someone needs to know,” or the construction Onun bilmesi gerekir, meaning “he should know” or “it is necessary for him to know.” The form often appears in relative clauses or in expressions that describe required knowledge, capability, or expectations.

Examples:

- Çocuğun bilmesi gerekenler öğretmen tarafından açıklandı. (The things the child needs to know were explained by the teacher.)

- Onun bilmesi gerekenleri bana söyle. (Tell me what he needs to know.)

- Bilmesi gerekenler listesi kısa sürdü. (The list of things to know was short.)

Notes:

- Bilmesi is closely related to bilmek (to know) and bilgi (knowledge). It is a flexible tool in Turkish for nominalizing knowledge-related content and is particularly common in formal or written contexts, as well as in instructional or evaluative language.