SUMMARY
The article deals with the expression of affirmation category in a colloquial style. Analyzed the intention of the affirmation on lexical, grammatical and syntactic language levels. Structured each means of realization of affirmative meaning into a proper niche. The research confirmed that nouns, verbs, adverbs belong to the nuclear identifications of the affirmation category. Sub-nuclear identifications of the affirmation category include word-sentences represented as particles, modal verbs, exclamations and estimation lexemes. As for intermediate means of affirmation representation one may attribute the expression likes ‘I know’ or syntactically segmented structures. Peripheral verbalizers of affirmative meaning cover comparisons and phraseological structures. The outmost peripheral niche is formed by elliptical incentive structures, repetitions and combinations of several particles and adverbs. Established, that an affirmation within colloquial style is connected with stating the fact, agreement with the previous fact, approval of the decision, confidence as to the previous message, approval of information truthfulness.