Slack-spined antonyms

What is the opposite word for Slack-spined?

Antonyms for slack-spined
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Opposite words of slack-spined
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Antonyms for Slack-spined. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/antonyms/slack-spined
Antonyms for Slack-spined. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/antonyms/slack-spined>.
Antonyms for Slack-spined. 2016. Accessed August 03, 2026. https://thesaurus.plus/antonyms/slack-spined.