'clear-cut' originates from the combination of 'clear' and 'cut', where 'clear' meant 'free from obstruction' and 'cut' meant 'to sever or divide'.

'clear-cut' evolved from the literal action of cutting trees in a way that leaves the area clear, eventually becoming a metaphor for clarity and distinctness.

Initially, it referred to the literal act of cutting trees, but over time it evolved into its current metaphorical meaning of 'distinct and unambiguous'.