1. to be assuaged or quieted SN.iv.215.
2. to be suppressed or removed Ja.iii.334.
3. to be subdued or extinguished, to go out (of light) Tha-ap.35

pp vūpasanta
caus vūpasāmeti to appease, allay, quiet, suppress, relieve SN.v.50; Snp-a.132 (reṇuṃ); Pv-a.20, Pv-a.38 (sokaṃ), Pv-a.200

vi + upasammati