noun
shallow learning; superficial knowledge
Refers to knowledge that is merely heard and repeated without deep understanding; a classical expression used in literary or critical contexts.
彼の知識は口耳の学に過ぎず、本質を理解していない。
His knowledge is nothing more than shallow learning; he doesn't understand the essence.
口耳の学 is a fixed classical phrase emphasizing rote repetition without understanding, while 浅学 is a more general and modest term for one's own shallow or limited learning.
A classical Chinese-derived expression (四字熟語) combining 口 (mouth), 耳 (ear), and 学 (learning), suggesting knowledge that enters through the ears and exits through the mouth without being internalized.