/ kənˈkɒkt; NAmE -ˈkɑːkt/ verb [ vn ]
1.
to make sth, especially food or drink, by mixing different things :
The soup was concocted from up to a dozen different kinds of fish.
2.
to invent a story, an excuse, etc.
SYN cook up , make up :
She concocted some elaborate story to explain her absence.
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WORD ORIGIN
mid 16th cent.: from Latin concoct- , literally cooked together, from concoquere . The original sense was refine metals or minerals by heating , later cook .