Synonyms and Antonyms for PO

1. PO (n.)

a noncommissioned officer in the Navy or Coast Guard with a rank comparable to sergeant in the Army

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2. Po (n.)

a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor

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3. PO (n.)

an independent agency of the federal government responsible for mail delivery (and sometimes telecommunications) between individuals and businesses in the United States

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4. Po (n.)

a European river; flows into the Adriatic Sea

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5. po-faced (adj.)

humorless and disapproving

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