Antonyms are words that are opposite in meaning. The phrase "more back-to-back" implies a consecutive or uninterrupted sequence that is increasing or intensifying. Some antonyms for this phrase include "intermittent," "sporadic," "discontinuous," "irregular," and "scattered." These words suggest a lack of consistency, with interruptions or breaks in between. Other antonyms could be "diverse," "varied," "different," "divergent," or "unrelated," which suggest a lack of uniformity or similarity. It is important to identify antonyms to fully understand the meaning of a word or phrase and communicate ideas effectively.