basic

I

(New American Roget's College Thesaurus)

adj. fundamental, essential; alkaline. See intrinsic, inorganic matter.

II

(Roget's IV) modif.

Syn. essential, central, primary, elementary; see fundamental 1 , necessary 1 .

III

(Roget's 3 Superthesaurus)

I

n.

fundamental, rudiment, essential, nuts and bolts.

II

a.

fundamental, rudimentary, essential, primary, vital, elementary, key, necessary.

ANT.: nonessential, superfluous, extra

IV

(Roget's Thesaurus II) I adjective 1. Of or being an irreducible element: elemental, elementary, essential, fundamental, primitive, ultimate, underlying. See SURFACE. 2. Constituting or forming part of the essence of something: constitutional, constitutive, essential, fundamental, integral, vital. See BE, SURFACE. 3. Of or treating the most basic aspects: basal, beginning, elementary, rudimental, rudimentary. See SIMPLE, START. 4. Arising from or going to the root or source: basal, foundational, fundamental, original, primary, radical, underlying. See SURFACE. II noun A fundamental irreducible constituent of a whole: element, essential, fundamental, rudiment (often used in plural). Idiom: part and parcel. See PART.