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effect
Pronunciation of effect /əˈfɛkt/ (say uh'fekt), Pronunciation of effect /i-/ (say ee-)

noun 1.  that which is produced by some agency or cause; a result; a consequence: the effect of heat.

2.  power to produce results; efficacy; force; validity; weight: of no effect.

3.  the state of being operative; operation or execution; accomplishment or fulfilment: to bring a plan into effect.

4.  a mental impression produced, as by a painting, speech, etc.

5.  the result intended; purport or intent; tenor or significance: he wrote to that effect.

6.  (of stage properties) a sight, sound or, occasionally, smell simulated by artificial means to give a particular impression in a theatre.

7.  a scientific phenomenon: the Doppler effect.

8. (plural) goods; movables; personal property.

verb (t) 9.  to produce as an effect; bring about; accomplish; make happen.

10.  to produce or make.

phrase 11. be in effect, be in operation, as a law.

12. come into effect, become operative, as a law.

13. for effect, for the sake of a desired impression; with histrionic intent.

14. in effect, in fact or reality, although perhaps not formally acknowledged as such: he is in effect the leader.

15. take effect, to begin to operate, as a drug, etc.

[Middle English, from Latin effectus, from efficere bring about]
effecter, noun
effectible, adjective

Usage: Effect is commonly confused with affect.