Etymon
gem-urona-protowest-germanic-uron-old-english-erian-middle-english-eren-middle-english-bikeren-english-bicker-protoindoeuropean-mn-protoindoeuropean-mntom-protoitalic-mntom-latin-mentum-old-french-mentbor
A dedicated page for this root is on the way — it will gather every word descended from it, sibling forms across daughter languages, and a branching map of the family tree.