effect effect /ˈiːfɛkt, əˈfɛkt/

noun

1. () A phenomenon that follows and is caused by some previous phenomenon  ( event , issue , upshot , consequence , effect , outcome , result )
   a phenomenon that follows and is caused by some previous phenomenon
    The magnetic effect was greater when the rod was lengthwise
   the magnetic effect was greater when the rod was lengthwise
    His decision had depressing consequences for business
   his decision had depressing consequences for business
    He acted very wise after the event
   he acted very wise after the event
   
2. () An outward appearance  ( impression , effect )
   an outward appearance
    He made a good impression
   he made a good impression
    I wanted to create an impression of success
   I wanted to create an impression of success
    She retained that bold effect in her reproductions of the original painting
   she retained that bold effect in her reproductions of the original painting
   
3. () An impression (especially one that is artificial or contrived)  ( effect )
   an impression (especially one that is artificial or contrived)
    He just did it for effect
   he just did it for effect
   
4. () The central meaning or theme of a speech or literary work  ( burden , core , essence , effect , gist )
   the central meaning or theme of a speech or literary work
   
5. () (of a law) having legal validity  ( force , effect )
   (of a law) having legal validity
    The law is still in effect
   the law is still in effect
   
6. A symptom caused by an illness or a drug  ( effect )
   a symptom caused by an illness or a drug
    The effects of sleep loss
   the effects of sleep loss
    The effect of the anesthetic
   the effect of the anesthetic
   

verb

1. () Produce  ( effectuate , set up , effect )
   produce
    The scientists set up a shock wave
   The scientists set up a shock wave
   
2. () Act so as to bring into existence  ( effect )
   act so as to bring into existence
    Effect a change
   effect a change