noun
mindless repetition; parroting; speaking in a similar manner
Describes repeating someone else's words without thought, or mimicking their way of speaking. Often used in contexts of imitation or echoing.
彼は上司の意見を口写しに言っているだけだ。
He's just parroting his boss's opinion.
口写しで覚えたフレーズを使う。
Use phrases learned by rote repetition.
Compound of 口 (mouth) and 写し (copying). The exact historical derivation is uncertain, but the meaning is transparent from its components.