Silence
From Scriptwiki
Adds or removes an address from your silence list.
/silence [[+|-]<mask>|<nick>]
This command silences/unsilences the specified nick/mask. The silence works server side, unlike ignore you won't receive the messages. The number of silences you can set is given on connect by raw 5 (normally 15).
Results are replied with a raw.
Examples
silence shows your silence list silence *!*@*moo would silence every user with a matching host silence +fishbot would silence fishbot silence -fishbot removes silence of fishbot if it exists silence -* removes all