British spelling of 'biased'; showing unfair preference toward one side or group.
From 'bias' plus the past participle suffix '-ed'. British English preserves the double-s spelling from the French origin 'biais', while American English simplified it to single-s.
This spelling shows why British and American English can look so different—Britain kept the double-s from Old French 'biais', while America streamlined it, and both versions are completely correct!
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