“You keep using that word. I do not think it means what you think it means.”

Ever discovered that a word you’ve been hearing forever turns out to mean something different from what you thought?

‘Tosspot’ I always assumed was an alternative for ‘tosser’. It means ‘drunkard’.

‘Enormity’ doesn't mean ‘enormousness’. It can, but specifically regarding atrociousness, immoderation or extreme wickedness.

‘Dastardly’ can mean underhanded, wicked or cruel, but only secondarily. Its primary meaning is ‘cowardly’.

More fool me.