signator
submitting
ink
signatory
signer
cosignatory
cosigner
allograph
sign into law
consignatory
give up the ghost
subscribe
signed
sign-on
wager
round robin
request
per procurationem
memorialist
inscriptive
affidavit
submittal
confabulate
memorandize
per pro
underwrite
put one's fist to
memo
confession
keep one's side of the bargain
collateralize
requisitionist
signaletic
John Hancock
postulation
avow
petition
moniker
windbill
credentialization
pollicitation
comaker
proferens
autographing
bookstop
pledgee
authorization
signedness
condition
entremet