Dictionary / Vocabulary / 頭が固い
あたまがかたい
thickheaded; obstinate; inflexible; stubborn
Also written 頭が硬い、頭がかたい
僕たちの先生って本当に頭が固いよね。
Our teacher really stands on ceremony, doesn't she?
彼は頭が固い。
He is thick-headed.
トムは頭が固い。
Tom is thickheaded.