Plural of churl; multiple rude or impolite people, or historically, multiple peasants or commoners.
Regular pluralization of 'churl' with English '-s' suffix. The word's usage shifted from referring to a social class to describing character, but pluralization remained straightforward.
The word 'churl' appears throughout Middle English literature as both a social descriptor and character insult, but it never became as culturally entrenched as 'villain' (originally a peasant farmer, now meaning evil person)—geography determined which class insults survived.
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