Definitions:

1. to cease, stop verb
   • We are going to cut off spending on coffee.
2. to pull in front of another car, leaving a dangerously small amount of space between the two verb
   • That jerk cut me off.
3. to remove by or as if by cutting verb
   • I cut off the ear.
4. to stop someone from talking verb
   • I couldn't hear any more of their nonsense so I cut them off and told them to come back when they had their thoughts on the subject sorted.

Synonyms:

• chop off
• cut
• disrupt
• interrupt
• lop off
• severed