dis- /dɪs/ BrE AmE prefix
[ Language: Old French ; Origin: des- , from Latin dis- , from dis 'apart' ]
1 . shows an opposite or negative:
I disapprove (=do not approve)
dishonesty (=lack of honesty)
2 . [in verbs] shows the stopping or removing of a condition:
Disconnect the machine.
Disinfect the wound.