Search and compare thousands of words and phrases in American Sign Language (ASL). The largest collection online.
How to sign: additional proof that something that was believed (some fact or hypothesis or theory) is correct
"fossils provided further confirmation of the evolutionary theory";
How to sign: making something valid by formally ratifying or confirming it
"the ratification of the treaty"; "confirmation of the appointment";
Similiar / Same: ratification
How to sign: a sacrament admitting a baptized person to full participation in the church