Definitions of doom:

• noun:   an unpleasant or disastrous destiny

  Example: "Everyone was aware of the approaching doom but was helpless to avoid it"

• verb:   make certain of the failure or destruction of

  Example: "This decision will doom me to lose my position"

• verb:   decree or designate beforehand
• verb:   pronounce a sentence on (somebody) in a court of law
• name:  A surname (very rare: popularity rank in the U.S.: #24734)