Sub-sides refer to a condition where something diminishes in intensity, weight or size. Opposites of sub-sides include thrive, flourish, prosper, and grow. Thrive conveys a sense of prospering in all aspects, while flourish emphasizes on thriving beyond expectations. Prosper communicates a sense of economic growth or success, while grow denotes an increase in size or amount. The opposite of sub-sides can also be ascent or rise, indicating an upward movement, such as climbing a hill or ascending a ladder. Other antonyms of sub-sides include expand, enlarge, amplify or augment, all indicating growth, spread, and amplification.