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Phrase(s): Every tub must stand on its own bottom. [and] Let every tub stand on its own bottom.
Prov. People should be independent. • Emily did not want to join the other students, who were helping each other study for the exam. "Every tub must stand on its own bottom," she said. • Don’t ask me for help. Let every tub stand on its own bottom.
McGrawhill's American Idioms And Phrasal Verbs