Why is the 部首 of 詈 "言" instead of "四"？ Both &quot;言&quot; and &quot;四&quot; are radicals (部首). For &quot;詈&quot;, the radical is 言, not 四. Why? In general, when there is more than one part which can be a radical, which one will be the radical for the character?
部首 is typically (but not in all cases) used to illustrate a character's fundamental feature. 
詈 means to curse, so it is related with 言(speak, remark, words etc.).