death on

death on idiom
Very effective against; also, very fond of. For example, “He is a wonderful fielder and sure death on bunts” (Christy Mathewson, Pitching, 1912), or The boss is death on tardiness, or She's death on the latest fashions. [Slang; early 1800s]

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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