Main entry: primary
Definition: of first rank or importance or value; direct and immediate rather than secondary
Usage: primary goals; a primary effect; primary sources; a primary interest
Antonyms: secondary
Definition: being of second rank or importance or value; not direct or immediate
Antonyms: unoriginal
Definition: not original; not being or productive of something fresh and unusual
Antonyms: general
Definition: a fact about the whole (as opposed to particular)
Antonyms: universal, universal proposition
Definition: (logic) a proposition that asserts something of all members of a class
Antonyms: indirect
Definition: not direct in spatial dimension; not leading by a straight line or course to a destination
Antonyms: alternating
Definition: (of a current) reversing direction
Antonyms: indirect
Definition: extended senses; not direct in manner or language or behavior or action
Antonyms: inverse
Definition: opposite in nature or effect or relation to another quantity
Antonyms: retrograde
Definition: moving from east to west on the celestial sphere; or--for planets--around the sun in a direction opposite to that of the Earth
Main entry: elemental, elementary, primary
Definition: of or being the essential or basic part
Usage: an elementary need for love and nurturing
Antonyms: incident, incidental
Definition: (sometimes followed by `to') minor or casual or subordinate in significance or nature or occurring as a chance concomitant or consequence
Main entry: basal, primary
Definition: of primary importance
Antonyms: inessential, nonessential
Definition: anything that is not essential
Antonyms: unessential, inessential
Definition: not basic or fundamental
Main entry: main, master, chief, primary, principal
Definition: most important element
Usage: the chief aim of living; the main doors were of solid glass; the principal rivers of America; the principal example; policemen were primary targets; the master bedroom; a master switch
Antonyms: unimportant
Definition: not important
Main entry: primary
Definition: not derived from or reducible to something else; basic
Usage: a primary instinct
Antonyms: derived
Definition: formed or developed from something else; not original