nonsignature

noun2

1. •
   Absence of a signature; failure to sign.

   • Despite several decisions on nonsignature, the court cases on this subject deal only with unanimous awards. — 1973
2. •
   That which is not a signature.

   • But there are many cases where a signature is made that is actually a nonsignature. The bad-check files are full of signatures of “Ima Thief,” “U. R. Had,” and “George Q. Washington,” etc. — 1979