beginning β The beginning of an event or process is the first part of it.
cause β a person or thing that acts, happens, or exists in such a way that some specific thing happens as a result; the producer of an effect: You have been the cause of much anxiety. What was the cause of the accident?
commencement β The commencement of something is its beginning.
introduction β the act of introducing or the state of being introduced.
origin β something from which anything arises or is derived; source; fountainhead: to follow a stream to its origin.
source β any thing or place from which something comes, arises, or is obtained; origin: Which foods are sources of calcium?
start β to begin or set out, as on a journey or activity.
defeat β If you defeat someone, you win a victory over them in a battle, game, or contest.
failure β an act or instance of failing or proving unsuccessful; lack of success: His effort ended in failure. The campaign was a failure.