unpersuasive
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Meaning
not effective in making someone believe that something is true or right; failing to convince.
Structure
Usage
the argument was unpersuasive and failed to change anyone's mind.
despite his efforts, the evidence he presented was unpersuasive to the jury.
i found the advertisement's claims to be completely unpersuasive.
Etymology
The word 'unpersuasive' is a Modern English formation built upon the core adjective 'persuasive'. Its components trace back to classical antiquity. The root originates from Latin 'persuadēre', a compound verb meaning "to convince thoroughly," itself from 'suadēre', meaning "to urge or advise," a verb of Proto-Indo-European origin related to sweetness and pleasant urging. The suffix '-ive', also from Latin, transforms verbs into adjectives denoting a quality or tendency. The Germanic prefix 'un-' is then attached, a common negating element in English. Thus, the literal construction "not having the tendency to persuade" logically yields the modern meaning of failing to convince.
Analysis
un: a prefix of germanic origin (old english) meaning "not," used to give a negative or opposite force. persuas: a bound root derived from latin 'persuadēre', meaning "to persuade," from 'per-' (thoroughly) + 'suadēre' (to advise, urge). ive: a suffix from latin '-īvus', used to form adjectives meaning "tending to," "having the nature of," or "performing the action of."