1. attainment Progress (L. pro, forward, gradior, go) is a moving onward or forward, whether in space or in the mental or moral realm, and may be either mechanical, individual, or social. Attainment, deve Synonyms: progress, advance, development, improvement, proficiency, advancement, growth, increase, progression, attainment Antonyms: check, delay, falling off, retrogression, stop, decline, falling back, relapse, stay, stoppage