- adequate to accomplish a purpose; producing the intended or expected result: effective teaching methods; effective steps toward peace.
- actually in operation or in force; functioning: The law becomes effective at midnight.
- producing a deep or vivid impression; striking: an effective photograph.
- prepared and available for service, especially military service.
- a member of the armed forces fit for duty or active service.
- the effective total of a military force.
Origin of effective
Synonyms for effective
Antonyms for effective
Examples from the Web for uneffective
Historical Examples of uneffective
The exaggeration of the last verse is of course intentional, and in the original not uneffective.Exotics and Retrospectives
- productive of or capable of producing a result
- in effect; operativeeffective from midnight
- producing a striking impression; impressivean effective entrance
- (prenominal) actual rather than theoretical; realthe effective income after deductions
- (of a military force, etc) equipped and prepared for action
- physics (of an alternating quantity) having a value that is the square root of the mean of the squares of the magnitude measured at each instant over a defined period of time, usually one cycleSee also root mean square
- a serviceman who is equipped and prepared for action
Word Origin and History for uneffective
late 14c., from French effectif, from Latin effectivus "productive, effective," from effect-, stem of efficere (see effect (n.)). Effectively in the sense of "actually" is attested by 1650s. Related: Effectivity.