The Britannica Dictionary
mobile search
Home
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
×
Britannica Homepage
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
The Britannica Dictionary
ineffective
1 ENTRIES FOUND:
ineffective
(adjective)
ineffective
/ˌɪnə
ˈ
fɛktɪv/
adjective
ineffective
/ˌɪnə
ˈ
fɛktɪv/
adjective
Britannica Dictionary definition of INEFFECTIVE
[
more ineffective; most ineffective
]
:
not producing or having the effect you want
:
not effective
The treatment was
ineffective
against the disease.
an
ineffective
law/leader
[+] more examples
[-] hide examples
[+] Example sentences
[-] Hide examples
— ineffectively
adverb
She argued her point
ineffectively
.
[+] more examples
[-] hide examples
[+] Example sentences
[-] Hide examples
— ineffectiveness
noun
[
noncount
]
He has been criticized for his
ineffectiveness
as a leader.
[+] more examples
[-] hide examples
[+] Example sentences
[-] Hide examples
ASK THE EDITOR
What are the plural forms of
check-in
,
passerby
, and
spoonful
?
See the answer »
QUIZZES
Vocabulary Quiz
Test your word power
Take the Quiz »
Name That Thing
Take our visual quiz
Test Your Knowledge »
WORD OF THE DAY
scrumptious
:
very pleasant to taste (
informal
)
Learn More »