adjective. leading or controlling; above all others; having the most power

adjective. permanence by virtue of the power to resist stress or force; able to last a long time

noun. a deep furrow or ditch or cut

noun. the portion or bits of something left over or behind after it has been destroyed

noun. a deep narrow valley usually created by flowing water

noun. secretive or surreptitious or covert movement or procedure; sneakiness; furtiveness

adjective. existing or occurring at the same period of time; noun. a person living during the same period as another

adjective. coming at the beginning; coming before the main event or activity

verb. to make known publicly; to announce