tamp down
Advanced (C1)neutral
To push something down hard to make it smaller or less powerful.
"He tamped down the earth around the newly planted tree."
Hear it in context

The Time the US Sent 813 Soldiers to Cut Down One Tree
Half as Interesting · 6:07
tamp down continued hand-to-hand

Tools for Managing Stress & Anxiety
Andrew Huberman · 66:45
to try and tamp down the stress response,

Psychology of Love: Narcissism, Toxic Love & Male Identity | Mark Manson | FO503 Raj Shamani
Raj Shamani · 111:36
tamp down and put everything in check again

Tools for Managing Stress & Anxiety
Andrew Huberman · 52:54
In fact, let's just really tamp down the relationship

Melania Epstein BOMBSHELL, Trump goes NUCLEAR, Lebanon DISASTER | Julian Dorey
Julian Dorey · 66:10
that you're trying to tamp down a war with.