negative regulation of gene expression
http://purl.obolibrary.org/obo/GO_0010629
Any process that decreases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product (protein or RNA). [ GOC:txnOH-2018 ]
Term info
This term covers any process that negatively regulates the rate of production of a mature gene product, and so includes processes that negatively regulate that rate by reducing the level, stability or availability of intermediates in the process of gene expression. For example, it covers any process that reduces the level, stability or availability of mRNA or circRNA for translation and thereby reduces the rate of production of the encoded protein via translation.
gene silencing
biological_process
GO:0010629
https://github.com/geneontology/go-ontology/issues/22557