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disable [disabled, disabling, disables]▼(to deactivate a function of an electronic or mechanical device)
verb
[UK: dɪs.ˈeɪb.l̩] [US: ˌdɪ.ˈseɪb.l̩]

disconnect [disconnected, disconnecting, disconnects]▼(to sever or interrupt a connection)
verb
[UK: ˌdɪs.kə.ˈnekt] [US: ˌdɪs.kə.ˈnekt]

unplug [unplugged, unplugging, unplugs]▼(disconnect from a supply)
verb
[UK: ʌn.ˈplʌɡ] [US: ʌn.ˈpləɡ]

disconnect▼(break in an existing connection)
noun
[UK: ˌdɪs.kə.ˈnekt] [US: ˌdɪs.kə.ˈnekt]