English Online Dictionary. What means effective? What does effective mean?
English
Alternative forms
- eff.
Etymology
From French effectif, from Latin effectīvus (“productive; effective”), from efficiō (“I make; I bring about”), equivalent to effect + -ive.
Pronunciation
- (weak vowel distinction) IPA(key): /ɪˈfɛktɪv/
- (weak vowel merger) IPA(key): /əˈfɛktɪv/
- (General Australian) IPA(key): /əˈfektɪv/
- Homophone: affective (weak vowel merger)
- Rhymes: -ɛktɪv
Adjective
effective (comparative more effective, superlative most effective)
- Having the power to produce a required effect or effects.
- Synonym: efficacious
- Producing a decided or decisive effect.
- Efficient, serviceable, or operative, available for useful work.
- Antonym: nominal
- Actually in effect.
- (geometry, of a cycle or divisor) Having no negative coefficients.
- (algebra, of a group action) Such that no group element acts trivially.
- (physics, for any effective theory) approximate; Not describing the fundamental dynamic changes in some system as they happen.
Usage notes
Webster's Revised Unabridged Dictionary from 1913 lists efficient and effective as synonyms, but all major dictionaries now show that these words now only have different meanings in careful use. Use of both for the other meaning is however widespread enough that Longman's Exam Dictionary, for example, finds it necessary to proscribe the use of one for the other with several examples at each entry and provides the following summary:
- efficient = working quickly and without waste
- effective = having the desired effect
Derived terms
Related terms
Translations
Noun
effective (plural effectives)
- (military) a soldier fit for duty
French
Pronunciation
- IPA(key): /e.fɛk.tiv/
- Homophone: effectives
Adjective
effective
- feminine singular of effectif
Latin
Adjective
effectīve
- vocative masculine singular of effectīvus