queue-jumping
nounUK /ˈkjuː ˌdʒʌm.pɪŋ/
US /ˈkjuː ˌdʒʌm.pɪŋ/
Going in front of people who were waiting before you.
The teacher told the boy off for queue-jumping at the water fountain.
OTHER MEANINGS
2. Getting something before others by not waiting your turn.
Buying tickets early online felt like queue-jumping to some fans.
3. In computing, a process that skips ahead of others waiting to run.
The scheduler prevents queue-jumping so every task gets a fair turn.
4. Moving ahead of others in a priority list, such as for medical care.
The hospital was criticized for queue-jumping by private patients.