callous

a. 麻木的、無情的、堅硬的、硬皮的、起老繭的

vt. 使生繭、使變硬

學術名詞

硬的：醫學
有胝質的：植物學
硬化的：植物學

英文釋義

make insensitive or callous; deaden feelings or morals
emotionally hardened
having calluses; having skin made tough and thick through wear