noun

• (figurative) Something devastating, like a strong earthquake.
  "But HS1 was more exposed to the COVID quake than most given its inherent reliance on international travel, which had collapsed, leaving cross-Channel operator Eurostar stacked with millions of debt."

verb

• (intransitive) To tremble or shake.
  "I felt the ground quaking beneath my feet."
• (intransitive, figurative) To be in a state of fear, shock, amazement, etc., such as might cause one to tremble.
  "Turning back, then, toward the basement staircase, she began to grope her way through blinding darkness, but had taken only a few uncertain steps when, of a sudden, she stopped short and for a little stood like a stricken thing, quite motionless save that she quaked to her very marrow in the grasp of a great and enervating fear."