as cool as a cucumber

(adjective) relaxed and confident

Example Sentence:

On my first day of school, I was so nervous about everything. My friend was as cool as a cucumber!

She was as cool as a cucumber before her presentation because she was well-prepared.

Media:

Click to hear a native speaker pronounce at Forvo.com

Similar idioms:

1. basket case
2. a picture paints a thousand words
3. all nighter
4. by leaps and bounds
5. a hill of beans
6. calm, cool and collected
7. back seat driver
8. bark up the wrong tree
9. cool one’s heels