The phrase "momentous shift" refers to a significant and important change that can have a big impact or consequences.
Sentences with «momentous shift»
So, the day after one of the most momentous shifts in Labour Party policy of the last decade, he found two hours in his diary to make a desperate dash into the lion's den. (theguardian.com)
Bridge and her friends are all experiencing a quietly momentous shift toward adulthood, and Stead gracefully, frankly, and humorously captures that change. (booklistonline.com)
July 23, 2014 • Even before the double calamity of its two downed flights, Malaysia Airlines was trying to adapt to momentous shifts in Asia's aviation industry. (npr.org)