godfather UK /ˈɡɒdfɑːðə/US /ˈɡɑdfɑðɚ/noun 4verb 1forms 3 noun4 •A man present at the christening of a baby who promises to help raise the child in a Christian manner; a male godparent who sponsors the baptism of a child. •(figurative) Someone who plays a key role in fostering the development of something.“They are trying to kill the messenger with the bad news, it’s crazy,” said Dr James Hansen, known as the godfather of climate science and previously director of Giss for more than 30 years. — 2025 •A mafia leader. •A small post which is used in repairing a fence. For instance attached to and supporting an existing broken fence post. verb1 •(figurative) To act as godfather or guardian to.But months before, he'd agreed to godfather the premiere of The Godfather. — 2006 formsgodfathered · godfathering · godfathers