occasion

n.

  1. A falling out, happening, or coming to pass; hence, that which falls out or happens; occurrence; incident.
  2. A favorable opportunity; a convenient or timely chance; convenience.
  3. An occurrence or condition of affairs which brings with it some unlooked-for event; that which incidentally brings to pass an event, without being its efficient cause or sufficient reason; accidental or incidental cause.
  4. Need; exigency; requirement; necessity; as, I have no occasion for firearms.
  5. A reason or excuse; a motive; a persuasion.

v. t.

  1. To give occasion to; to cause; to produce; to induce; as, to occasion anxiety.