共
Common
suffix
1
suffix
humble (kenjougo) language
word usually written using kana alone
first-person plural (or singular)
2
suffix
derogatory
word usually written using kana alone
second or third person plural (implies speaker is of higher status than those referred to)
そのろくでなしどもはクビになりましたよ。
Those good-for-nothing layabouts were sacked.