Effective

effective
    adj 1: 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" [syn:
           {effective}, {effectual}, {efficacious}] [ant:
           {ineffective}, {ineffectual}, {uneffective}]
    2: 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" [syn:
       {effective}, {efficient}]
    3: works well as a means or remedy; "an effective reprimand"; "a
       lotion that is effective in cases of prickly heat"
    4: exerting force or influence; "the law is effective
       immediately"; "a warranty good for two years"; "the law is
       already in effect (or in force)" [syn: {effective}, {good},
       {in effect(p)}, {in force(p)}]
    5: existing in fact; not theoretical; real; "a decline in the
       effective demand"; "confused increased equipment and
       expenditure with the quantity of effective work done"
    6: ready for service; "the fort was held by about 100 effective
       soldiers"
    

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.
   [1913 Webster]

         They are not effective of anything, nor leave no work
         behind them.                             --Bacon.
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         Whosoever is an effective, real cause of doing his
         heighbor wrong, is criminal.             --Jer. Taylor.

   Syn: Efficient; forcible; active; powerful; energetic;
        competent. See {Effectual}.
        [1913 Webster]
    

Effective \Ef*fect"ive\, n.
   1. That which produces a given effect; a cause. --Jer.
      Taylor.
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   2. One who is capable of active service.
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            He assembled his army -- 20,000 effectives -- at
            Corinth.                              --W. P.
                                                  Johnston.
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   3. [F. effectif real, effective, real amount.] (Com.) Specie
      or coin, as distinguished from paper currency; -- a term
      used in many parts of Europe. --Simmonds.
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   4. The serviceable soldiers in a country; an army or any
      military body, collectively; as, France's effective.
      [Webster 1913 Suppl.]
    

107 Moby Thesaurus words for "effective":
      able, acid, active, actual, adequate, armipotent, authoritative,
      banausic, basic, biting, capable, charismatic, charming, cogent,
      compelling, competent, consequential, conspicuous, convincing,
      corrosive, cutting, direct, driving, dynamic, effectual,
      efficacious, efficient, enchanting, energetic, equal to, essential,
      estimable, feasible, forceful, forcible, functional, functioning,
      go, gutsy, high-potency, high-powered, high-pressure, high-tension,
      imperative, important, impressive, in force, in operation,
      in power, incisive, influential, irresistible, magnetic, mighty,
      mighty in battle, momentous, mordant, moving, nervous, noticeable,
      operable, operational, operative, outstanding, penetrating,
      personable, persuasive, piercing, poignant, potent, powerful,
      practicable, practical, pragmatic, prepotent, prestigious,
      productive, proficient, puissant, punchy, real, realizable,
      remarkable, reputable, ruling, sensational, serviceable, sinewed,
      sinewy, slashing, sound, striking, strong, suasive, substantial,
      telling, trenchant, true, up to, useful, valid, vigorous, virtuous,
      vital, weighty, winning, workable