Abstract
The article analyses the negative morphemes ha and a in Sesotho and Tshivenda respectively. These morphemes, amongst many other mechanisms, induce negation in Sesotho and Tshivenda sentences. The article also focuses on constituents that appear with the forementioned morphemes, such as the subject, object and verbs. Types of sentences such as clefts and moods will also come under scrutiny in so far as they relate to the negative morphemes.