Any process that stops, prevents or reduces the frequency, rate or extent of metalloendopeptidase activity.
Synonyms:
exact_synonym:
down regulation of metalloendopeptidase activity; downregulation of metalloendopeptidase activity; negative regulation of metalloendoprotease activity
narrow_synonym:
down regulation of metalloendoprotease activity; down regulation of metalloendoproteinase activity; downregulation of metalloendoprotease activity; downregulation of metalloendoproteinase activity; inhibition of metalloendopeptidase activity; inhibition of metalloendoprotease activity; inhibition of metalloendoproteinase activity; negative regulation of metalloendoproteinase activity