耳みみ学がく問もん

noun

second-hand knowledge; hearsay; pick-up knowledge

Knowledge acquired by hearing others talk, not through formal study or direct experience. Often carries a slightly dismissive nuance, implying superficial or unreliable learning.

• 彼かれの知ち識しきは耳みみ学がく問もんに過すぎない。

  His knowledge is nothing more than hearsay.

• 耳みみ学がく問もんで得えた情じょう報ほうは当あてにならないことも多おおい。

  Information gained through second-hand knowledge is often unreliable.