IPA: /hɑːrdˈhɛdədnəs/
KK: /hɑrdˈhɛdɪdˌnɛs/
The quality of being stubborn or unwilling to change one's mind.
Her hardheadedness often led to conflicts with her colleagues.
Hardheadedness → It is formed from "hard" (from Old English "heard", meaning firm or solid) and "headed" (from "head", meaning the part of the body where the mind is located) combined with the suffix "-ness" (meaning the state or quality of). The word describes the state of being stubborn or inflexible in one's opinions or decisions, as if one's head is hard like a rock.
Think of someone whose opinions are as firm as a 'hard' surface, and 'headed' refers to their mindset. This helps you remember that 'hardheadedness' means being stubborn or inflexible.