run out of steam
Meaning: If someone runs out of steam, they run out of energy or enthusiasm. If something runs out of steam, it loses momentum and slows down.
- Steve started the game well, but he ran out of steam towards the end. He needs to work on his fitness.
- Hillary's campaign ran out of steam when it became clear there was no way she could win the nomination.
Grandma was having a great time at the party, but I could see she was running out of steam by about ten o'clock, so I