chickenshit

[chik-uh n-shit]Slang: Vulgar.
adjective
  1. obsessed with petty details.
  2. menial or petty.
  3. cowardly or fainthearted.

Origin of chickenshit

1945–50; Americanism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018