adamant
/ˈæ.də.mænt/adjective
Refusing to change one's mind or position; completely firm in a belief.
Example sentences
- “He was adamant that the meeting should go ahead as planned.”
- “My grandmother is adamant that the whole family eats dinner together on Sundays.”
Usually followed by "that" or "about". The word once named a legendary unbreakable stone, which is a handy memory hook for its meaning.