1. the quality or state of being fateful; the condition of having important or decisive consequences
2. the quality of being controlled by or subject to fate; inevitability

Examples

• The fatefulness of that decision became clear only years later.
• She spoke of the fatefulness of their meeting with a sense of wonder.
• The fatefulness of the moment hung heavy in the air as they waited for the verdict.
• He felt the fatefulness of history unfolding before his eyes.
• The fatefulness of her choice would shape the rest of her life.
• There was an undeniable fatefulness to the way events had unfolded.