primal
1. [ adjective ] serving as an essential component
Synonyms: central fundamental key cardinal
Examples:

"a cardinal rule" "the central cause of the problem" "an example that was fundamental to the argument" "computers are fundamental to modern industrial structure"

Related terms: important
2. [ adjective ] having existed from the beginning; in an earliest or original stage or state
Synonyms: primeval primordial primaeval aboriginal
Examples:

"aboriginal forests" "primal eras before the appearance of life on earth" "the forest primeval" "primordial matter" "primordial forms of life"

Related terms: early
Similar spelling:   primality
  primly
  primula
  premolar
  preanal