LATIN DICTIONARYLexicon Latīnum
English → Latin

“fundamental” in Latin

The English word fundamental itself goes back to Latin fundus, through fundāmentālis.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

fundamental adj.
primus: primarius (first): principalis (primary; chief; e.g., causa). A fundamental law, lex primaria: a fundamental notion, prima notio or notitia: principium: intelligentia quasi fundamentum scientiae (Cic., Legg., 1, 9). A fundamental principle or rule, praeceptum firmum et stabile (Cic.): the fundamental articles of a constitution, instituta prima: the fundamental principles of human nature, principia naturae, quibus parere et quae sequi debes (Cic., or debent omnes).
fundamental s.
Fundamentals, *capita doctrinae sacrae prima or principalia, or *doctrinae sacrae principia.

Quick answer

What is the Latin word for fundamental?
The usual Latin words for “fundamental” are prīmus, prīmārius, prīncipālis; also causa, nōtitia, prī̆nceps. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.