Overthinking overthinking

Over thinker. Should it be one word? Spellcheck says no. Over-thinker. Spellcheck likes the hyphen. Prediction: Overthinker will soon become a bona fide no-hyphen word. Or is it bona-fide? A lot of us overthink. We deserve our own word. How long have people been overthinking? Forever, no doubt. But think about it. When did everybody start saying “overthink”? PAUSE TO (OVER)THINK. The verb…