ef·fec·tive

[ih-fek-tiv]
adjective
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, especially military service.
noun
5.
a member of the armed forces fit for duty or active service.
6.
the effective total of a military force.
00:10
Effectively is always a great word to know.
So is callithumpian. Does it mean:
a stew of meat, vegetables, potatoes, etc.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.

Origin:
1350–1400; Middle English < Latin effectīvus practical, equivalent to effect(us), past participle of efficere (see effect) + -īvus -ive

ef·fec·tive·ly, adverb
ef·fec·tive·ness, ef·fec·tiv·i·ty, noun
pre·ef·fec·tive, adjective
pre·ef·fec·tive·ly, adverb
qua·si-ef·fec·tive, adjective
qua·si-ef·fec·tive·ly, adverb
sub·ef·fec·tive, adjective
sub·ef·fec·tive·ly, adverb
sub·ef·fec·tive·ness, noun
su·per·ef·fec·tive, adjective
su·per·ef·fec·tive·ly, adverb
su·per·ef·fec·tive·ness, noun
un·ef·fec·tive, adjective
un·ef·fec·tive·ly, adverb
un·ef·fec·tive·ness, noun

affective, effective (see synonym study at the current entry).


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 especially 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.


1. futile, useless.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To effectively
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World English Dictionary
effective (ɪˈfɛktɪv) [Click for IPA pronunciation guide]
 
adj
1.  productive of or capable of producing a result
2.  in effect; operative: effective from midnight
3.  producing a striking impression; impressive: an effective entrance
4.  (prenominal) actual rather than theoretical; real: the effective income after deductions
5.  (of a military force, etc) equipped and prepared for action
6.  physics See also root mean square (of an alternating quantity) having a value that is the square root of the mean of the squares of the magnitude measured at each instant over a defined period of time, usually one cycle
 
n
7.  a serviceman who is equipped and prepared for action
 
ef'fectively
 
adv
 
ef'fectiveness
 
n

effective (ɪˈfɛktɪv) [Click for IPA pronunciation guide]
 
adj
1.  productive of or capable of producing a result
2.  in effect; operative: effective from midnight
3.  producing a striking impression; impressive: an effective entrance
4.  (prenominal) actual rather than theoretical; real: the effective income after deductions
5.  (of a military force, etc) equipped and prepared for action
6.  physics See also root mean square (of an alternating quantity) having a value that is the square root of the mean of the squares of the magnitude measured at each instant over a defined period of time, usually one cycle
 
n
7.  a serviceman who is equipped and prepared for action
 
ef'fectively
 
adv
 
ef'fectiveness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

effective
late 14c., from Fr. effectif, from L. effectivus (see effect). Related: Effectively; effectivity.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences
There are several countries profitably using biofuels cars can be designed to run effectively and efficiently on ethanol.
It effectively amplifies the available light several thousand times, giving you a green-hued window into the night.
With a true objective view, it can be done effectively, and saves us from further judgement and above all resentment.
But many politicians and pundits do not trust that private companies can get the job done safely and effectively.
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