This paper discusses standard negation in Sɛlɛɛ. Sɛlɛɛ is a Ghana-Togo Mountain (GTM) Language of the Kwa group of the Niger Congo family. Standard negation is the negation of declarative verbal clauses. Different strategies are used in Sɛlɛɛ to negate declarative verbal main clauses depending on the tense and aspect category of the verb. The basic negation strategy used in standard negation is tonal alternation, with or without other negation markers. The other strategies are the use of portmanteau morphemes, affixes and vowel lengthening. Interestingly, in one and the same tense paradigm, different persons can select different negation strategies. There is syncretism among the 1st person singular forms of the negative recent past, the negative habitual and the negative perfect.