Fateful describes a moment or decision that will have major, lasting consequences. When something is fateful, it marks a turning point where life changes direction in ways that can't easily be undone.

The attack on Pearl Harbor on December 7, 1941, was a fateful day that brought America into World War II. Rosa Parks' fateful decision to keep her seat on that Montgomery bus in 1955 helped spark the Civil Rights Movement. These weren't just important moments: they were fateful because they set in motion events that changed everything that came after.

Fateful decisions happen in ordinary lives too. Choosing which high school to attend might be fateful if it leads you to lifelong friends or helps you discover a passion you never knew you had. A fateful conversation might be the one where you first meet your best friend.

The word often carries a sense of destiny or inevitability, as if larger forces were at work. When historians call something a “fateful choice,” they mean the person making it was standing at a crossroads, even if they didn't fully realize it at the time. Some fateful moments feel heavy with importance as they happen, while others only reveal their significance later, when you look back and realize that's when everything changed.