ineffective
Translation
ineffective, ineffectual, useless
Examples
The medicine was ineffective against the pain.
The medicine was ineffective against the pain.
He was an ineffective leader.
He was an ineffective leader.
Grammar Patterns
((to be)) ineffective ((against sth.)) The treatment was ineffective against the disease.
((an ineffective)) ((noun)) It was an ineffective strategy.
Similar Words
Synonyms: useless, futile, ineffectual; Antonyms: effective, efficient, successful
Etymology
Comes from the prefix 'in-' (meaning 'not') combined with 'effective'. So, it literally means 'not effective'.
Memory Tips
Just remember that the 'in-' prefix often means 'not'. So, ineffective = not effective.