Main entry: central
Definition: in or near a center or constituting a center; the inner area
Usage: a central position
Antonyms: peripheral
Definition: on or near an edge or constituting an outer boundary; the outer area
Antonyms: right
Definition: of or belonging to the political or intellectual right
Antonyms: left
Definition: of or belonging to the political or intellectual left
Antonyms: beginning
Definition: the first part or section of something
Antonyms: end
Definition: a final part or section
Antonyms: start, starting time, showtime, beginning, get-go, outset, offset, commencement, kickoff, first
Definition: the time at which something is supposed to begin
Definition: the point in time at which something ends
Antonyms: late
Definition: being or occurring at an advanced period of time or after a usual or expected time
Antonyms: early
Definition: at or near the beginning of a period of time or course of events or before the usual or expected time
Antonyms: late
Definition: of a later stage in the development of a language or literature; used especially of dead languages
Antonyms: early
Definition: of an early stage in the development of a language or literature
Antonyms: conventional
Definition: (weapons) using energy for propulsion or destruction that is not nuclear energy
Main entry: cardinal, central, key, primal, fundamental
Definition: serving as an essential component
Usage: a cardinal rule; the central cause of the problem; an example that was fundamental to the argument; computers are fundamental to modern industrial structure
Antonyms: unimportant
Definition: not important