Dry moon is a term used in astrology to describe month when there are no significant astrological events occurring. Some synonyms for dry moon could be quiet month, uneventful cycle, or low tide period. These words describe a time when things are relatively calm and not much seems to be happening in terms of celestial events. However, it's important to note that even during a dry moon, there are always some astrological events taking place, albeit on a much smaller scale. So while it may seem like nothing significant is happening during this time, the universe is still at work.