ineffective
8 synonyms and 1 antonym for ineffective, grouped by meaning and by how common each one is.
Adjective — Not producing the result you want or need.
Synonyms
Everyday swaps
Common words most readers know — safe in any writing.
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
How to use ineffective
The word patterns that sound natural to a native speaker.
proved ineffective
largely ineffective
ineffective treatment
Etymology
From in- ("not") + effective, itself from Latin efficere, "to accomplish."
Full origin of ineffective →Frequently asked questions
What does “ineffective” mean?
The word “ineffective” means not producing the result you want or need. In plain terms, something that just doesn't work or doesn't get results.
How do you pronounce “ineffective”?
“Ineffective” is pronounced ihn-ih-FEHK-tihv (/ˌɪn.ɪˈfɛk.tɪv/ in IPA).
How do you use “ineffective” in a sentence?
Here is “ineffective” used in a sentence: “The new painkiller proved ineffective against her migraines.”
What part of speech is “ineffective”?
“Ineffective” is an adjective.
Where does the word “ineffective” come from?
The word “ineffective” comes from Latin. From in- ("not") + effective, itself from Latin efficere, "to accomplish.".
Is “ineffective” a common word?
“Ineffective” is an uncommon word in modern English, usually learned at around the B2 level.
How many meanings does “ineffective” have?
“Ineffective” has 2 distinct senses listed in this dictionary. The most common is: not producing the result you want or need.
What is the difference between "ineffective" and "inefficient"?
"Ineffective" means something does not produce the result you want or need at all, while "inefficient" means something works but wastes time, effort, or resources in doing so. A method can be inefficient yet still effective, or effective yet inefficient.
Can "ineffective" describe a person rather than a method or treatment?
Yes, "ineffective" can also describe a person who is not capable of doing a job well or is incompetent, as in "an ineffective manager." This sense focuses on a person's poor performance rather than on outcomes alone.
What is the opposite of "ineffective"?
The direct opposite is "effective," meaning something that successfully produces the intended result. Related opposites include "competent" or "capable" when describing a person rather than a method.
