Full Idea
Semantic holism is a desperate measure. Belief content would be continually changed by new beliefs, evidence for a belief would change the target belief, and no two people would ever agree on concepts.
Gist of Idea
Semantic holism means new evidence for a belief changes the belief, and we can't agree on concepts
Source
Georges Rey (Contemporary Philosophy of Mind [1997], 9.1.2)
Book Reference
Rey,Georges: 'Contemporary Philosophy of Mind' [Blackwell 1997], p.240
A Reaction
It is far more plausible to say language is a bit on the holistic side. Total holism is mad.