effective


effective
/i fek"tiv/, adj.
1. adequate to accomplish a purpose; producing the intended or expected result: effective teaching methods; effective steps toward peace.
2. actually in operation or in force; functioning: The law becomes effective at midnight.
3. producing a deep or vivid impression; striking: an effective photograph.
4. prepared and available for service, esp. military service.
n.
5. a member of the armed forces fit for duty or active service.
6. the effective total of a military force.
[1350-1400; ME < L effectivus practical, equiv. to effect(us), ptp. of efficere (see EFFECT) + -ivus -IVE]
Syn. 1. capable, competent. EFFECTIVE, EFFECTUAL, EFFICACIOUS, EFFICIENT refer to that which is able to produce a (desired) effect. EFFECTIVE is applied to that which has the power to, or which actually does, produce an effect: an effective action, remedy, speech. EFFECTUAL is used esp. of that which produces the effect desired or intended, or a decisive result: An effectual bombardment silenced the enemy. EFFICACIOUS suggests the capability of achieving a certain end: an efficacious plan, medicine. EFFICIENT (applied also to persons) implies the skillful use of energy or industry to accomplish desired results with little waste of effort: efficient methods; an efficient manager. 2. operative. 3. telling.
Ant. 1. futile, useless.

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Universalium. 2010.

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  • 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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