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Latin word invocare comes from Latin ingratus (Thankless. Ungrateful. Unpleasant, disagreeable.), Latin vocare, Latin voco
ingratus (Latin)
Thankless. Ungrateful. Unpleasant, disagreeable.
vocare (Latin)
voco (Latin)
(transitive) I call, summon, beckon (with one's voice).. (transitive) I name, designate. (transitive, by extension) I invoke, call upon (a person, especially a god). (transitive, by extension) I summon, convene, call together.. I bring or put (into a state or condition).
invocare (Latin)