effect

nouns

a phenomenon that follows and is caused by some previous phenomenon
"the magnetic effect was greater when the rod was lengthwise"; "his decision had depressing consequences for business"; "he acted very wise after the event"
is derived from
an outward appearance
"he made a good impression"; "I wanted to create an impression of success"; "she retained that bold effect in her reproductions of the original painting"
an impression (especially one that is artificial or contrived)
"he just did it for effect"
is a type of (narrower)
a vague idea in which some confidence is placed
"his impression of her was favorable"; "what are your feelings about the crisis?"; "it strengthened my belief in his sincerity"; "I had a feeling that she was lying"
the central meaning or theme of a speech or literary work
(of a law) having legal validity
"the law is still in effect"
a symptom caused by an illness or a drug
"the effects of sleep loss"; "the effect of the anesthetic"
is derived from
is a type of (narrower)
(medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease

verbs

produce
"The scientists set up a shock wave"
is derived from
is derived from
is derived from
act so as to bring into existence
"effect a change"
is derived from
is derived from
is a type of (narrower)
perform an action, or work out or perform (an action)
"think before you act"; "We must move quickly"; "The governor should act on the new energy bill"; "The nanny acted quickly by grabbing the toddler and covering him with a wet towel"