Starting a new adventure or embarking on a voyage are popular synonyms for the phrase "begin a journey." Other alternatives include commencing a trek, setting forth on a quest, embarking on a pilgrimage, going on a maiden voyage, initiating a sojourn, launching an odyssey, and commencing an excursion. These expressions signify the idea of embarking on a new adventure or journeying into the unknown. In every individual's life, the decision to commence a voyage can be energizing and fulfilling. The use of these synonyms may add depth and variety to one's writing, making it more interesting and engaging.