Antonyms for the phrase "be dormant" can include "be active," "be lively," "be bustling," "be thriving," "be flourishing," "be animated," "be energetic," "be vivacious," and "be invigorated." These antonyms embody the opposite of dormancy, meaning that they represent states of excitement, growth, and productivity. Being active denotes progress and accomplishment, while being lively suggests an enthusiastic and vigorous attitude. Being bustling means moving with purpose and vigor, while being thriving and flourishing imply a state of abundance and prosperity. Being animated and energetic represent dynamic energy and renewed vigor, while being vivacious and invigorated represent lively enthusiasm and renewed strength.