What does the word affect mean?

Usage examples for affect

  1. For, by the pow'rs of heav'n, I'll not allow That you, although her father, wish her better Than I. I love her on my son's account; To whom, I'm well convinc'd, she is as dear As he is to himself: and I can tell How deeply 'twill affect him, if he knows this. – The Comedies of Terence by Publius Terentius Afer
  2. You know perfectly well just how they affect her. – The Heart of Arethusa by Francis Barton Fox
  3. He could not affect the mind of the lawyer; might he reach now, perhaps, the soul of the man? – The Lifted Bandage by Mary Raymond Shipman Andrews