wet behind the ears

(adjective) young and inexperienced

Example Sentences:

Our new boss was too wet behind the ears, so our company lost a lot of money.

The teacher was so wet behind the ears that we didn’t learn anything. She was too nervous to teach!

Media:

Similar idioms:

1. prick up one’s ears
2. all ears
3. wet blanket
4. bring up
5. take up