"Spare moment" refers to a brief period of free time that one has, often in the midst of a busy or hectic day. There are numerous synonyms for this phrase, including "idle time," "downtime," "leisure time," "free time," "surplus time," "unoccupied time," "vacant time," "off-time," "gap time," "breather time," "respite time," "tranquil time," and "quiet time." These synonyms are interchangeably used to connote a short duration in which one can take a break, rest, or engage in leisure activities. Regardless of the choice of words used, having a spare moment in our bustling lives is crucial for our mental and physical well-being.