This chapter discusses the means of negating clauses in Turkish, and particular expressions which interact with negation. Sections 20.1–20.3 describe the conditions in which the markers of negation, -mA, değil and yok, are used. In 20.4 we discuss the negative connective ne…ne…‘neither… nor…’, and in 20.5 expressions that occur mainly in negative sentences, such as hiç ‘never’, ‘ever’, ‘at all’, kimse ‘no one’, ‘anyone’, hiçbir şey ‘nothing’, ‘anything’, asla ‘never’, etc. Section 20.6 focuses on the usage of negative expressions in subordinate clauses.