adamant
adjectiveUK /ˈæd.ə.mənt/
US /ˈæd.ə.mənt/
Refusing to change your mind about something.
She was adamant that she would not eat broccoli.
RELATED WORDS
OTHER MEANINGS
2. A very hard stone or rock that cannot be broken easily.
The old legend said the sword was made of adamant.
3. Extremely hard and unbreakable in a physical sense.
The castle walls were built of adamant stone.
4. Refusing to be persuaded or talked out of a decision.
He was adamant about leaving early, no matter what we said.