hairsbreadth

[hairz-bredth, -bretth, -breth] /ˈhɛərzˌbrɛdθ, -ˌbrɛtθ, -ˌbrɛθ/
noun
1.
a very small space or distance:
We escaped an accident by a hairsbreadth.
adjective
2.
extremely narrow or close.
Also, hair's-breadth, hairbreadth.
Origin
1575-85
Examples from the web for hairsbreadth
  • His actions were a hairsbreadth away from being insulting.
  • Come see computers in control of metal cutting, and marvel at machines that make a hairsbreadth sound crude.