negative regulation of mRNA cis splicing, via spliceosome
Any process that stops, prevents or reduces the frequency, rate or extent of mRNA cis splicing, via spliceosome.
GO:0048025
negative regulation of mRNA splicing, via spliceosome
is_a
GO:1905744
regulation of mRNA cis splicing, via spliceosome
is_a
GO:0045292
mRNA cis splicing, via spliceosome
negatively_regulates