invent

1. Come up with (an idea, plan, explanation, theory, or principle) after a mental effort (synset 201635953)
   "excogitate a way to measure the speed of light"
   is a type of: create by mental act, create mentally - create mentally and abstractly rather than with one's hands
   same as: contrive, devise, excogitate, forge, formulate
2. Concoct something artificial or untrue (synset 201637966)
   is a type of: concoct, dream up, hatch, think of, think up - devise or invent
   subtypes:

   • mythologise, mythologize - construct a myth
   • confabulate - unconsciously replace fact with fantasy in one's memory
   • concoct, trump up - invent
   • spin - make up a story
   • vamp, vamp up - make up
   same as: cook up, fabricate, make up, manufacture

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