'intentionally-checked' originates from the combination of 'intentionally' and 'checked', where 'intentionally' comes from Latin 'intentio', meaning 'a stretching out', and 'checked' from Old French 'eschequier', meaning 'to stop'.

'intentionally' evolved from the Latin 'intentio' through Old French 'intencion', while 'checked' evolved from Old French 'eschequier' to Middle English 'chekken'.

Initially, 'intentionally' meant 'a stretching out', and 'checked' meant 'to stop'. Over time, they combined to mean 'deliberately examined'.