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effective

 

Definitions from WordNet

Adjective effective has 6 senses
  1. effective, effectual, efficacious - producing or capable of producing an intended result or having a striking effect; "an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation"-LewisMumford; "effective teaching methods"; "effective steps toward peace"; "made an effective entrance"; "his complaint proved to be effectual in bringing action"; "an efficacious law"
    Antonym: toothless
  2. effective, efficient - able to accomplish a purpose; functioning effectively; "people who will do nothing unless they get something out of it for themselves are often highly effective persons..."-G.B.Shaw; "effective personnel"; "an efficient secretary"; "the efficient cause of the revolution"
    Antonym: incompetent (indirect, via competent)
  3. effective - works well as a means or remedy; "an effective reprimand"; "a lotion that is effective in cases of prickly heat"
    Antonym: inefficacious (indirect, via efficacious)
  4. effective, good, in effect, in force - exerting force or influence; "the law is effective immediately"; "a warranty good for two years"; "the law is already in effect (or in force)"
    Antonym: inoperative (indirect, via operative)
  5. effective - existing in fact; not theoretical; real; "a decline in the effective demand"; "confused increased equipment and expenditure with the quantity of effective work done"
    Antonyms: potential, possible (indirect, via actual)
  6. effective - equipped and ready for service; "the fort was held by about 100 effective soldiers"
    Antonym: nonoperational (indirect, via operational)

Definitions from the Web

Term: Effective

Definition:

adjective

1. producing the desired outcome or results; successful

2. impressive; striking

3. in operation or in force; valid

Sample Sentences:

1. The new advertising strategy proved to be very effective in increasing sales.

2. The thunderstorm was accompanied by an effective display of lightning.

3. The contract will not be effective until both parties sign it.

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