'intentionally-lessened' originates from the combination of 'intentionally' and 'lessened', where 'intentionally' comes from Latin 'intentio' meaning 'a stretching out' and 'lessened' from Old English 'lǣsian' meaning 'to make less'.

'intentionally' evolved from Latin 'intentio' through Old French 'intencion', and 'lessened' from Old English 'lǣsian', eventually forming the modern English term 'intentionally-lessened'.

Initially, 'intentionally' meant 'with intention or purpose', and 'lessened' meant 'to make less'. The combined term 'intentionally-lessened' retains these meanings, indicating a purposeful reduction.