"Burning one's boats" is an idiom commonly used to indicate a situation of complete commitment when there is no turning back. However, there are several synonyms for this phrase that can add variety and depth to the expression. Some examples include "cutting off all options," "taking a leap of faith," or "making a decisive move." Other phrases include "committing wholeheartedly," "burning bridges," or "putting all eggs in one basket." Essentially, these expressions all convey the idea of taking a bold step forward, with full awareness that there is no going back, and in which the consequences - both positive and negative - are embraced with courage and conviction.