effective

effective
ef|fec|tive [ ı`fektıv ] adjective ***
1. ) someone or something that is effective works well and produces the result that was intended:
Humor is often far more effective than shouting.
You need effective communication within the organization.
The troops should be deployed where they will be most effective.
effective against: The new vaccine is highly effective against all strains of the disease.
effective way/method/means: This is a very effective way of controlling pests and weeds.
a ) attractive or impressive, and producing a definite effect:
The decorations are easy to make, yet very effective.
2. ) FORMAL when a law or agreement becomes effective, it officially begins to be used:
effective from: Government ministers reached a 30-month agreement, effective from July 1.
3. ) only before noun used for saying what the situation really is, although its appearance or official description might be different:
The U.S. military is in effective control of the entire region.
a ) used for saying what is really having a particular effect, although other things may be involved in a situation:
the effective agents in the spread of the disease
╾ ef|fec|tive|ness noun uncount

Usage of the words and phrases in modern English. 2013.

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Synonyms:
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  • effective — ef‧fec‧tive [ɪˈfektɪv] adjective 1. working well and producing the result or effect that was wanted or intended: • The company mounted a very effective publicity campaign. • The 7% increase in sales shows that the company has become more… …   Financial and business terms

  • effective — effective, effectual, efficient, efficacious all mean producing or capable of producing a result or results, but they are not freely interchangeable in idiomatic use. Effective emphasizes the actual production of an effect or the power to produce …   New Dictionary of Synonyms

  • effective — ef·fec·tive adj 1: producing a desired effect an effective revocation of the contract 2: capable of bringing about an effect effective assistance of counsel see also ineffective assistance o …   Law dictionary

  • effective — effective, effectual, efficacious, efficient 1. All these words mean ‘having an effect’ of some kind, but with different applications and shades of meaning. Effective means ‘having a definite or desired effect’ that is actual rather than… …   Modern English usage

  • Effective — Ef*fect ive, a. [L. effectivus: cf. F. effectif.] Having the power to produce an effect or effects; producing a decided or decisive effect; efficient; serviceable; operative; as, an effective force, remedy, speech; the effective men in a regiment …   The Collaborative International Dictionary of English

  • Effective — Ef*fect ive, n. 1. That which produces a given effect; a cause. Jer. Taylor. [1913 Webster] 2. One who is capable of active service. [1913 Webster] He assembled his army 20,000 effectives at Corinth. W. P. Johnston. [1913 Webster] 3. [F. effectif …   The Collaborative International Dictionary of English

  • effective — [e fek′tiv, ifek′tiv; ] often [ ēfek′tiv, əfek′tiv] adj. [ME & OFr effectif < L effectivus] 1. having an effect; producing a result 2. producing a definite or desired result; efficient 3. in effect; operative; active 4. actual, not merely… …   English World dictionary

  • effective — late 14c., from Fr. effectif, from L. effectivus productive, effective, from effect , stem of efficere (see EFFECT (Cf. effect)). Effectively in the sense of actually is attested by 1650s. Related: Effectivity …   Etymology dictionary

  • effective — [adj1] productive, persuasive able, active, adequate, capable, cogent, compelling, competent, convincing, direct, effectual, efficacious, efficient, emphatic, energetic, forceful, forcible, having lead in pencil*, impressive, live, moving, on the …   New thesaurus

  • effective — ► ADJECTIVE 1) producing a desired or intended result. 2) (of a law or policy) operative. 3) existing in fact, though not formally acknowledged as such. DERIVATIVES effectively adverb effectiveness noun effectivity noun …   English terms dictionary

  • effective */*/*/ — UK [ɪˈfektɪv] / US adjective 1) a) someone or something that is effective works well and produces the result that was intended You need more effective communication within the organization. Humour is often far more effective than shouting. The… …   English dictionary

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