Meaning & use
adamant
Refusing to change one's mind or position; firmly determined.
See it in a sentence
She was adamant that the project would be finished on time, no matter the obstacles.
Despite the criticism, he remained adamant about his decision to resign.
A note on using this word
Adamant is typically followed by that or about, and describes a person's firm stance rather than the argument or fact itself, which would be indisputable.
Words with a similar meaning
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Words with an opposite meaning
Make it your own
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