Bedeutung von “ineffective” — Learner’s Dictionary

ineffective

adjective us uk /ˌɪnɪˈfektɪv/

If something is ineffective, it does not work well:

Morphine is used only when other painkillers are ineffective.
ineffectively adverb
ineffectiveness noun [ U ]

(Definition von “ineffective” aus dem Cambridge Learner's Dictionary © Cambridge University Press)