forged handwriting; plagiarism
Refers to imitating someone else's handwriting or passing off another's work as one's own. Often used in contexts of document forgery or academic dishonesty.
That signature is suspected of being forged.
He plagiarized his senior's report and submitted it.
Compound of 偽 (false, fake) and 筆 (writing brush, handwriting). The exact historical derivation is uncertain, but the meaning is transparent from its components.