Antonyms for the phrase "most last-minute" are words that describe something that is done in advance or well ahead of schedule. Words like "early," "timely," "organized," "planned," "premeditated," and "sufficient" can be used to describe actions that are taken well before the last minute. Being proactive, instead of reactive, can help individuals avoid the stress and unpredictability of last-minute tasks. Whether it's completing work projects, packing for a trip, or preparing for an exam, planning ahead can lead to greater success and peace of mind. By doing things in advance, one can avoid the rush and chaos of a last-minute scramble.