hell or high water, come

come hell or high water

No matter what. In spite of any obstacle. I don't care if I have to drive through a blizzard—we are getting to this wedding come hell or high water!
See also: come, hell, high, water
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

hell or high water, come

Also, in spite of hell or high water . No matter what difficulty or obstacle, as in I'm going to finish this week, come hell or high water. This colloquial expression, alluding to the destructive forces of hellfire or flood, was first recorded in 1915 but is thought to be older.
See also: come, hell, high
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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