'imprecisely-controlled' originates from the combination of 'imprecisely' and 'controlled'. 'Imprecisely' comes from the Latin 'im-' meaning 'not' and 'precisus' meaning 'cut off, brief'. 'Controlled' comes from the Latin 'contrarotulare', meaning 'to check against a roll'.

'Imprecisely-controlled' evolved from the combination of 'imprecisely' and 'controlled', which were used separately in Middle English and later combined in modern English.

Initially, 'imprecisely' meant 'not exact', and 'controlled' meant 'regulated'. Together, they evolved to describe something not regulated with precision.