The phrase "barely exist" implies something that is just about surviving, barely managing to stay afloat. Its antonyms would be words and phrases that describe the opposite state of thriving, flourishing, and abundant. Words like thriving, flourishing, and thrivingly describe a state where things are in abundance, where life is not just bearable but great. Other antonyms for "barely exist" include plentiful, copious, ample, and luxuriant, all of which evoke images of abundance and plenty. When we consider the antonyms for "barely exist," we realize that there is an entirely different world of possibility out there that life can be more than just barely existing but instead can be full of vibrancy and vitality.