When the mood strikes, you may feel spontaneous, impulsive or even restless. You may want to act on a whim, be in the right mindset or just have the inclination to do something particular. Some other synonyms for when the mood strikes include being struck by inspiration, having a moment of clarity or feeling a sudden burst of creativity. You may also feel overcome by an urge, or driven to follow your intuition. When the mood strikes, it's important to have the freedom to act and allow oneself to embrace the moment. It can lead to unexpected adventures and discoveries.