rare. [UNDER-1 10 a.]
1. trans. To describe in too low an aspect.
17234. Dk. Wharton, True Briton, No. 69, II. 589. Who has under-wrote his Character, and represented him in faint and unbecoming Colors.
2. refl. To fall below (oneself) in writing.
1766. Monthly Rev., XXXIV. 407. An author capable of so strangely under-writing himself.