phrenetic phre·ne·tic uncommon archaic adjective 1. excessively agitated; transported with rage or other violent emotion “frantic with anger and frustration” “frenetic screams followed the accident” “a frenzied look in his eye” Synonymsfranticfreneticfrenzied Similaragitated WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.