The phrase 'Look Before You LEAP' is a proverb that has been used for centuries to encourage people to think carefully before making decisions. The crossword solution for this phrase is LEAP, which is an acronym for 'Lack of Evidence Always Precedes'. This phrase is a reminder to always consider the evidence and facts before making a decision or taking action. It encourages people to take their time and think through the consequences of their actions before they act.