Antonyms for the phrase "make consistent" could include "create variability," "introduce irregularity," "cause discontinuity," or "promote inconsistency." These descriptions imply a lack of uniformity or stability in a particular situation or activity. Instead of aiming to produce a coherent or harmonious outcome, these antonyms suggest a more haphazard or unpredictable approach. For example, if someone aims to make their work consistently excellent, the antonyms might describe intentionally making the work less predictable or reliable. In some situations, adopting an inconsistent or variable approach might be desirable or creative, but in others, it could lead to confusion or inefficiency.