(v)invent, contrive, devise, excogitate, formulate, forgecome up with (an idea, plan, explanation, theory, or principle) after a mental effort“excogitate a way to measure the speed of light”
(v)organize, organise, prepare, devise, get up, machinatearrange by systematic planning and united effort“machinate a plot”, “organize a strike”, “devise a plan to take over the director's office”