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In page Obotrites:

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The ethnonym Obotrites (≈ Abodrites) is commonly traced to the Slavic root *bodr- ('cheerful, lively, brave; vigorous; alert'; cf. Bulg. бодър, Rus. бодрый, Pol. bodry [arch.], OCS бодръ). In this interpretation, Bodriči (≈ Obodrity) would signify 'the spirited/brave ones', with o- as a common Slavic prefix and -it- / -ič- serving as an ethnonymic formation.[1][citation needed]