Any process that stops, prevents or reduces the frequency, rate or extent of secondary metabolite biosynthetic process.
Synonyms:
exact_synonym:
down regulation of secondary metabolite biosynthetic process; down-regulation of secondary metabolite biosynthesis; downregulation of secondary metabolite biosynthesis; downregulation of secondary metabolite biosynthetic process; inhibition of secondary metabolite biosynthesis; negative regulation of secondary metabolite biosynthesis
narrow_synonym:
inhibition of secondary metabolite biosynthetic process