mid-15c., from Old French unanimite (14c.), from Late Latin unanimitatem (nominative unanimitas) "unanimity, concord," from unanimus (see unanimous).
Entries linking to unanimity
unanimous adj.
1610s, from Latin unanimus "of one mind, in union," from unus "one" (from PIE root *oi-no- "one, unique") + animus "mind, spirit" (see animus). Related: Unanimously.