This Old English adverb has dropped out of usage in the modern lexicon, but we think it’s worth a resurrection. It essentially means “in between” — try replacing that term with “betwixt” the next time you need to explain how an object is stuck between two others, or when you’re making a decision between choices. The adverb usage is most common, but “betwixt” can also be used as a preposition, meaning “between two people or things.” For example, “She picked up the wine glass carefully betwixt her thumb and forefinger.”