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do one's duty

1

Do one's tasks or what is expected of one. For example, He was only doing his duty when he made the children finish their work. [Early 1500s]

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2

Defecate or urinate, as in Please keep the dog outdoors until he does his duty. This euphemism for attending to such needs is heard less often today. [1930s]

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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

Related Words for do one's duty

execute, accept, observe, embrace, heed, surrender, comply, respond, accord, accede, concur, acquiesce, perform, serve, mind, submit, keep, discharge, answer, follow