ineffective
UK[ˌɪnɪˈfektɪv]US[ˌɪnəˈfektɪv]
adj
not producing any or the desired effect; not effective.
Morpheme Breakdown
in
effective
in
not
effective
producing a result
Etymology
the word "ineffective" is a straightforward english formation built upon the established adjective "effective." the prefix "in-," derived from latin, serves as a common negator in english, akin to "un-." the core component, "effective," traces back to the latin effectivus, which itself originates from the past participle effectus of the verb efficere ("to accomplish, bring about"). thus, the literal construction "not effective" directly and logically conveys the modern meaning of failing to produce a desired result or outcome.
Analysis
Structure: in (not) + effective (producing a result)
in- (latin origin, a prefix meaning "not"). effective (from latin effectivus, meaning "productive, causative").
Examples
the new marketing campaign proved completely ineffective in boosting sales.
the medication was ineffective against the strain of virus.
his attempts to mediate the dispute were largely ineffective.