indiscriminately

US /ˌɪn.dɪˈskrɪm.ə.nət.li/
UK /ˌɪn.dɪˈskrɪm.ə.nət.li/
1.

wahllos

in a way that does not show careful choice or planning, usually with harmful results:

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They fired indiscriminately into the crowd.