IPA: /ˈdaɪhɑrd/
KK: /ˈdaɪhɑrd/
Someone who is very loyal to a particular idea, group, or cause and does not want to change, even when it may be necessary.
He is a diehard fan of the team, never missing a game regardless of their performance.
A person who strongly supports a particular cause, belief, or idea, often refusing to change their opinion or behavior.
He is a diehard fan of the team, never missing a game regardless of the weather.
Diehard → The word is formed from "die" (from Old English "dīgan", meaning to cease living) and "hard" (from Old English "heard", meaning firm or strong). The term "diehard" refers to someone who is firmly resistant to change or who persists in their beliefs or actions, even in the face of adversity or death.
Think of someone who is 'strong' ('hard') in their beliefs, even when faced with the end ('die'). This helps you remember that a diehard person is someone who holds on firmly to their convictions.
No commonly confused words.