Synonyms for Primal (same or very similar meaning)
WordNet sense 1 (serving as an essential component):
cardinal, central, fundamental, key
WordNet sense 2 (of great significance or value):
important, of import
WordNet sense 3 (having existed from the beginning; in an earliest or original stage or state):
aboriginal, primeval, primordial, primaeval
WordNet sense 4 (at or near the beginning of a period of time or course of events or before the usual or expected time):
early
From the ODE community, based on WordNet
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