inaccurate

The word 'inaccurate' is a relatively modern English formation, built upon the established adjective 'accurate'. The core 'accurate' entered English in the late 16th century from Latin 'accuratus', meaning "done with care", itself from the verb 'accurare' ("to take care of"), a compound of 'ad-' ("to") and 'cura' ("care"). The Latin 'cura' is traced back to the Proto-Indo-European root kʷeis- ("to heed"). The negative prefix 'in-', from Latin, was attached directly to the English word 'accurate' to create its logical opposite. Thus, the literal construction "not done with care" perfectly captures the modern meaning of being incorrect or imprecise.

Structure: in (not) + accurate (precise) - in: A prefix of Latin origin, meaning "not" or "without". It functions as a negative particle. - accurate: An adjective of Latin origin, meaning "precise" or "correct". It functions as the core descriptive element.