non sequitur
noun/ˌnɒn ˈsekwɪtə(r)/
/ˌnɑːn ˈsekwɪtər/
(from Latin, formal)- a statement that does not seem to follow what has just been said in any natural or logical wayTopics Languagec2Word OriginLatin, literally ‘it does not follow’.
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non sequitur