1430: Oh: Too Meaningful to Define Nov 10, 2018
There are words invented specifically to not have a real meaning, called ghost-words, but some natural words are hard to define. 'Oh', for instance, is an exclamation used to show just about any emotion, including anger, surprise, and joy. Moreover, it is a discourse marker, used to indicate meaning that may relate more to the context of the conversation than to the conversation itself. In this way, 'oh' doesn't really have any definable meaning, and relies solely on the context to imprint meaning onto it.
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