- fundamental
- fundamental adj1 Fundamental, basic, basal, underlying, radical are comparable when they mean forming or affecting the groundwork, roots, or lowest part of something.Fundamental is used chiefly in reference to immaterial things or to abstractions, whether they are thought of as built up on a foundation or as having their origins in roots{
the fundamental rules of poetry
}{a fundamental change in his attitude to life
}{the fundamental rock in a geological formation
}{the fundamental absurdity of the plot . . . remains— FitzGerald
}{fatigue nor worry nor professordom could extinguish his fundamental gaiety— J. M. Brown
}Basic is often used interchangeably with fundamental when the latter implies reference to a substructure{the fundamental or basic argument
}But basic is preferred to fundamental when the reference is to a definite or concrete groundwork, bottom, or starting point{the basic stone of a pillar
}{a basic wage in the electrical industry
}{the distinction between basic scientific research and applied research— News Front
}Basal differs from basic chiefly in not being used as often in reference to immaterial things and in more often implying reference to the bottom or to the lowest point or regions of a thing{geologizing the basal parts of the Andes— Darwin
}{the basal plane of a crystal
}{basal leaves on a stem
}Underlying may be used to suggest nothing more than extension beneath something else{underlying rock strata
}{the underlying layer of tissue
}However, especially when the reference is to something immaterial, the term frequently comes close to fundamental, differing from it chiefly in suggesting a depth that removes the thing from one's range of vision or a remoteness that demands study or research on the part of one who would detect it{the underlying motive for his act
}{the underlying causes of World War I
}{underlying differences between Communism and socialism
}{the social transformation now demanded of us by our underlying technical, economic and social development— Strachey
}Radical (see also LIBERAL 2) implies reference to the root or origin or ultimate source of a thing; thus, a radical change is one that is so thoroughgoing that it affects the fundamental character of the thing involved; a radical error touches the very center and source of a thing's life{actual differences distinguishing the different races of mankind—differences that may be ascribed to radical peculiarities of mind— Bridges
}Analogous words: *primary, primal, primordial, prime: *elementary, elemental2 *essential, vital, cardinalAnalogous words: requisite, *needful, necessary, indispensable: paramount, *dominant: principal, capital, foremost, *chiefContrasted words: *superficial: *subordinate, secondaryfundamental n *principle, axiom, law, theorem
New Dictionary of Synonyms. 2014.