late 15c., from Old French invoquer, envoquer, envochier "invoke, implore" (12c.), from Latin invocare "call upon, implore," from in- "upon" (from PIE root *en "in") + vocare "to call," which is related to vox (genitive vocis) "voice" (from PIE root *wekw- "to speak"). Related: Invoked; invoking.
She invoked an ancient law
He invoked the law that would save him
invite
invitee
inviting
invocation
invoice
invoke
involuntary
involute
involution
involve
involved