The article deals with the activation of modal phraseologisms in public discourse, which used to be a striking example of relaxed colloquial speech. The wide use of modal phraseologisms is conditioned by such essential properties of these units as separateness, emotionality, expressiveness, evaluativeness, reproducibility, integrity of meaning. Diffuse semantics, which combines the phenomena of polysemy and eurysemy (broad meaning) allows expressing a rich palette of feelings and emotions experienced by speech subjects in the process of speech interaction. The semantic classification of modal phraseological units with the component "god" is undertaken, which reflects those features of semantics that allow to achieve the emergence of a predictable opinion and the corresponding emotional mood in listeners.