What are the opposite words for development?

Antonyms for the word "development" include regression, decline, deterioration, decay, retrogression, and stagnation. Regression refers to a return to a previous state, while decline suggests a gradual weakening or reduction. Deterioration implies a progressive disintegration or decay, while decay refers to a natural process of becoming rotten or decomposed. Retrogression implies a reversal of progress or development, and stagnation suggests a lack of growth or progress. While development typically implies growth and progress, its antonyms suggest a lack of such growth or even a reversal of it.