- I(New American Roget's College Thesaurus)adj. efficacious, effectual, productive, adequate, telling, potent, active, operative, dynamic; successful; causative; efficient, capable. See power, utility, agency, success, vigor. Ant., ineffective, useless.II(Roget's IV) modif.Syn. efficient, efficacious, effectual, serviceable, producing the expected result, producing the deSired result, useful, operative, active, in force, in effect, sufficient, adequate, productive, capable, competent, yielding, practical, valid, telling, striking, forceful, powerful, compelling, cogent, trenchant.Ant. inoperative, useless*, inefficient.Syn.- effective is applied to that which produces a definite effect or result [ an effective speaker ] ; efficacious refers to that which is capable of producing the deSired effect or result [ an efficacious remedy ] ; effectual specifically implies the production of the deSired effect or result in a decisive manner [ an effectual reply to his charge ] ; efficient implies skill and economy of energy in producing the deSired result and when applied to persons implies competence [ an efficient machine, an efficient worker ]III(Roget's 3 Superthesaurus) a.1. productive successful, compelling, sufficient, forceful, efficacious, useful, powerful, persuasive.2. operative functional, serviceable, in effect, active.ANT.: ineffectual, ineffective, impotent, inadequateIV(Roget's Thesaurus II) adjective 1. Producing or able to produce a desired effect: effectual, efficacious, efficient, productive. See THRIVE. 2. Full of or displaying force: dynamic, dynamical, forceful, forcible, hard-hitting, powerful, strong, vigorous. See STRONG. 3. In effect: operational, operative. See BE.
English dictionary for students. 2013.
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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