The word "de cays" refers to the process of rotting, decomposing or disintegrating. Antonyms for the word "de cays" may include terms that denote preservation, freshness, growth or vitality. Some possible antonyms include: "revival", "renewal", "rejuvenation", "revitalization", "freshness", "life", "vigour" and "thrive". These words evoke a sense of rejuvenation, growth and vibrancy, which stand in contrast to decay and degeneration. Antonyms can provide a useful way to juxtapose contrasting concepts and ideas, and can help to enrich our vocabulary and grasp of language.