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单词 effective
释义 effective
 —effectively,  adv.   —effectiveness, effectivity,  n.  
 /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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更新时间:2024/12/23 14:06:15