exhaust

Everyday

1. To exhaust someone means to make them extremely tired. tree →
2. To exhaust something means to use it up completely: exhaust the supplies. tree →
3. Exhaust is the waste gas that comes out of a car's engine. tree →
4. An exhaust (exhaust pipe) is the pipe at the back of a car that lets out these gases. tree →

In the lessons

In everyday life a long hike or a hard match can exhaust you; you feel exhausted. In science and environment lessons car exhaust fumes pollute the air and contain harmful gases; never stay near a running engine in a closed garage. In maths and logic, «exhaust all possibilities» means try every one. Phrases: «exhaust fumes», «exhaust pipe», «completely exhausted», «exhaust every option».

Examples

• The long walk exhausted the children. tree →
• I was exhausted after the swimming gala. tree →
• Exhaust fumes from cars pollute the air. tree →
• Smoke came out of the bus's exhaust pipe. tree →
• The explorers had exhausted their food supply. tree →
• We exhausted every idea before asking for help. tree →
• Don't stand behind a car's exhaust. tree →
• Running all day is exhausting! tree →
• "You are exhausting yourself, king's son," says she. tree →

Note

The h is silent: ig-ZAWST. Regular verb. Adjectives: exhausted (very tired), exhausting (making you tired). Noun: exhaustion. Safety: exhaust gas contains carbon monoxide, which has no smell and can kill.