Synonyms:
fateful, fatal
Meaning: having momentous consequences; of decisive importance; "that fateful meeting of the U.N. when...it declared war on North Korea"- Saturday Rev; "the fatal day of the election finally arrived"
Usage examples
Every day of the fateful August, 1914, was crowded with momentous events.
Now one phantom, one terror at least was at an end: that first, rightful lover, that fateful figure had vanished, leaving no trace.
After lunch, for example, he spends an hour alone, and in this period of meditation the whole fateful panorama of the war passes before him.
Nora was a blue-eyed, black-haired Irish girl, the sixth that the despairing Billy had interviewed on that fateful morning when Bertram had summoned her to his aid.
Uncle William, it might be mentioned in passing, had never quite forgotten Aunt Hannah's fateful call with its dire revelations concerning a certain unwanted, superfluous, third-party husband's brother.
Into this I was hustled and locked, whereupon the cage rose swiftly again to a hole in the bottom of the hull, into which it fitted snugly, and I stepped into the interior of a craft not unlike the one with which I had had my fateful encounter, the cage being unlocked.