Lacking feats or deeds; unable to perform great actions; ungainly or clumsy in a way that prevents achievement.
From 'feat' (meaning a deed or exploit) plus '-less' suffix (meaning without); describes someone or something lacking the ability or qualities to accomplish notable feats.
This is a devastating medieval insult—calling someone 'featless' meant they weren't just clumsy, they were fundamentally incapable of any achievement or glory, making it perfect for knights to hurl at cowards!
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