This paper examines the different ways of forming negative sentences in the Chaamling language, an indigenous language spoken in the eastern, hilly districts of Nepal. It explains that negation, or negativization, in the Chaamling language is done with the help of affixation. In imperative sentences, the prefix mi- is added to the verb, which is followed by the suffix -daa/dyo. These suffixes -daa/dyo could be the person markers third person singular -da and third person singular -dyo. An example is imsaa (sleep) mi- m-daa (do not sleep), and tyeti ringaa (tell a story) tyeti mi- rindaa (do not tell a story). In declarative sentences, the prefix paa- acts as a negative marker. In the second person, the suffix -ne is used. Sometimes, if the person is not mentioned, both the prefix paa- and the suffix -ne are used to refer to the rejection of doing a task. The prefixes paa- and mi- exchange places according to the aspect. In sentences with the verb to be, paainaa is used to make them negative. The marker is number-free. (SM)