Definitions of terrible:

• adjective:   causing fear or dread or terror

  Example: "A terrible curse"

• adjective:   intensely or extremely bad or unpleasant in degree or quality

  Example: "A terrible cough"

• adjective:   extremely distressing

  Example: "Suffered terrible thirst"

• adjective:   exceptionally bad or displeasing

  Example: "Terrible handwriting"

• name:  A surname (very rare: popularity rank in the U.S.: #77237)