What part of speech is “stopped”

stopped is a past form of the verb 'stop.' It is a verb which is used to describe the action of halting or ceasing movement or progress. It can also describe the interruption of a process by natural, accidental, or intentional means. It might be used in present, past and future tenses.

1. The plane have stopped on the runway before taking off.

2. The burglars stopped in their tracks when they heard sirens.

3. We will have stopped using paper cups before December.