negatively regulates DNA-templated transcription elongation regulation of DNA-templated transcription elongation negative regulation of DNA-templated transcription, elongation Any process that stops, prevents, or reduces the frequency, rate or extent of transcription elongation, the extension of an RNA molecule after transcription initiation and promoter clearance by the addition of ribonucleotides catalyzed by a DNA-dependent RNA polymerase. down regulation of RNA elongation down-regulation of RNA elongation negative regulation of DNA-dependent transcription, elongation negative transcription elongation regulator activity inhibition of RNA elongation downregulation of RNA elongation negative regulation of transcriptional elongation GO:0032785 biological_process negative regulation of transcription elongation negative regulation of transcription elongation, DNA-dependent negative regulation of DNA-templated transcription biological regulation