'tired' originates from Old English, specifically the word 'tēorian,' where 'tēor-' meant 'to fail or become weary.'

'tēorian' transformed into the Middle English word 'tiren,' and eventually became the modern English word 'tired.'

Initially, it meant 'to fail or become weary,' but over time it evolved into its current meaning of 'feeling a need to rest or sleep.'