effective

/'ifektiv/
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effective

The scarecrow is an effective tool to keep birds away from the crops.

Definition
  1. Adjective:
    • Producing a desired or intended result: Describes something that successfully achieves its purpose or goal.
    • Operative; in force: Describes a law, rule, or agreement that is officially active and applicable.
    • Actually existing; real: Refers to something that is factual or actual, as opposed to theoretical or nominal.
    • Impressive; striking: Describes something that creates a strong, positive impression.
    • Ready for service; fit for duty: (Military/Formal) Describes personnel or equipment that is operational and ready for use.
Examples of Usage
  • Adjective:
    • The new marketing strategy proved to be highly effective in increasing sales.
    • The new regulations will become effective on the first of January.
    • The effective demand for housing is lower than the reported figures.
    • He gave an effective speech that moved the entire audience.
    • The unit has 500 effective soldiers ready for deployment.
Advanced Usage
  • "Effective immediately": Starting right now, without delay.
    • Your promotion is effective immediately.
  • "Take effective action": To act in a way that produces the desired result.
    • The government must take effective action to curb inflation.
  • "Cost-effective": (Note: This is a compound word, listed here as advanced usage) Giving satisfactory results in relation to the money spent.
    • Solar panels are a cost-effective solution for long-term energy savings.
Variants and Related Words
  • Effectively (adverb): In a way that produces the desired result; virtually, in effect.
    • She managed the project effectively.
    • The two systems are effectively identical.
  • Effectiveness (noun): The degree to which something is successful in producing a desired result.
    • We need to measure the effectiveness of this training program.
  • Effectual (adjective): (Formal) Producing or able to produce the intended result; fully adequate.
    • They sought an effectual remedy for the problem.
  • Efficacious (adjective): (Formal, often for medicines/treatments) Having the power to produce a desired effect.
    • an efficacious vaccine.
Synonyms
  • Efficient: Performing or functioning in the best possible manner with the least waste of time and effort.
  • Potent: Having great power, influence, or effect.
  • Productive: Yielding favorable or useful results.
  • Operative: Functioning; having force or effect.
Antonyms
  • Ineffective: Not producing any significant or desired effect.
  • Ineffectual: Not producing the desired effect; unsuccessful.
  • Weak: Lacking the power to perform effectively.
Related Phrases
  • In effect: In operation; currently valid.
    • The old policy is still in effect.
  • To good effect: With a successful or positive result.
    • She used her experience to good effect in the negotiation.
  • With immediate effect: Starting now (synonymous with "effective immediately").
    • The contract is terminated with immediate effect.
effective

The scarecrow is an effective tool to keep birds away from the crops.

Adjective
  1. ready for service
    • the fort was held by about 100 effective soldiers
  2. existing in fact; not theoretical; real
    • a decline in the effective demand
    • confused increased equipment and expenditure with the quantity of effective work done
  3. exerting force or influence
    • the law is effective immediately
    • a warranty good for two years
    • the law is already in effect (or in force)
  4. works well as a means or remedy
    • an effective reprimand
    • a lotion that is effective in cases of prickly heat
  5. 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
  6. 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