negative regulation of imaginal disc-derived wing vein specification
Any process that stops, prevents, or reduces the frequency, rate or extent of imaginal disc-derived wing vein specification.
GO:0051241
negative regulation of multicellular organismal process
is_a
GO:0110107
regulation of imaginal disc-derived wing vein specification
is_a
GO:0007474
imaginal disc-derived wing vein specification
negatively_regulates