countersign
coun·ter·sign
noun
1.
verb
1.
add one''s signature to after another''s to attest authenticity
- “You must countersign on this line of the contract”
Origin
From Middle French contresigne. Equivalent to counter- + sign.
Related words
Word family
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.