E. Smith Sleigh said this quote

“ Post-structuralism is a reaction to structuralism and works against seeing language as a stable, closed system. It is a shift from seeing the poem or novel as a closed entity, equipped with definite meanings which it is the critic's task to decipher, to seeing literature as irreducibly plural, an endless play of signifiers which can never be finally nailed down to a single center, essence, or meaning.Jan Rybicki, 2003 ”