Letters that make signed
s, d, e, g, n, i are letters that make 'signed'
2 possible definitions for 'signed'
Under this definition, signed is an adjective and has the following properties:
unsigned has the opposite meaning of signed
autographed, subscribed are similar to 'signed'.
"a signed letter"
Under this definition, signed is an adjective and has the following properties:
gestural, sign(a), sign-language(a) have the same meaning as 'signed'
communicative, communicatory are similar to 'signed'.