Meaning of perfunctory

1. The student gave a perfunctory response when asked about their homework.
2. His smile was perfunctory, lacking any genuine warmth.
3. The company's apology seemed perfunctory and insincere.
4. She completed the task with a perfunctory attitude, not putting in much effort.
5. The waiter provided only perfunctory service, barely acknowledging our presence.
6. His compliments felt perfunctory, as if he was just going through the motions.
7. The meeting ended with a perfunctory thank you from the boss.
8. The employee's resignation letter was short and perfunctory, lacking any emotion.
9. The doctor's examination seemed perfunctory, as if he was just going through the motions.
10. The teacher's feedback on the student's essay was perfunctory, without any real constructive criticism.