The verb invent has 2 senses (first 2 from tagged texts)
1. (15) invent, contrive, devise, excogitate, formulate, forge -- (come up with (an idea, plan, explanation, theory, or principle) after a mental effort; "excogitate a way to measure the speed of light")
2. (5) fabricate, manufacture, cook up, make up, invent -- (make up something artificial or untrue)