negative regulation of glycoprotein biosynthetic process

Any process that decreases the rate, frequency, or extent of the chemical reactions and pathways resulting in the formation of a glycoprotein, a protein that contains covalently bound glycose (i.e. monosaccharide) residues; the glycose occurs most commonly as oligosaccharide or fairly small polysaccharide but occasionally as monosaccharide.

Definition from the Gene Ontology (GO:0010561), read 2026-09-23. CC BY 4.0.