a statement that doesn't logically follow from or is not clearly related to anything said before it (literally, 'it does not follow' in Latin)
Words It Might Replace:
nonsense, stumper, "huh?"
"'Russia needs more successful young entrepreneurs, therefore, governors should have more children!' At first it may seem a non-sequitur. But in Russia the joke is obvious, cutting to the heart of a growing source of discontent among the young: routes to professional success are fewer and fewer, while the offspring of top provincial officials and the like do well." Charles Clover, Financial Times.com, July 11, 2011