The Latin expression "annus magnus" refers to a significant or important year in someone's life. Synonyms that convey a similar meaning include "milestone year", "landmark year", "memorable year", "crucial year", "pivotal year" and "turning point year". Each of these synonyms highlights an important aspect of a year in which significant events occurred, whether they be joyful or challenging. These words can be used to describe a wide range of experiences, from personal milestones like weddings or the birth of a child, to broader events like historical or cultural milestones such as the end of a war or the founding of a country. Whatever the context, these synonyms capture the significance of an "annus magnus" and its lasting impact on an individual or community.