primordial

Concise Oxford English Dictionary © 2008 Oxford University Press:
primordial /prʌɪˈmɔːdɪəl/

▶adjective existing at or from the beginning of time; primitive.

– derivatives
primordiality noun,
primordially adverb.

– origin ME: from late L. primordialis ‘first of all’, from primordius, from primus ‘first’ + ordiri ‘begin’.