There are many synonyms for the phrase "wish one joy." Some of the most popular ones include "wish happiness," "hope for joy," "pray for gladness," "congratulate on joy," "offer felicitations," "bless with gaiety," "wish for merriment," "cheer on delight," "salute with bliss," and "extend best wishes for joy." These expressions are commonly used to offer congratulations and express good wishes on various occasions such as weddings, promotions, birthdays, and milestones. Whatever the event may be, these synonyms illustrate the importance of celebrating joy and expressing positive emotions towards others.