No one needs to be pious. You can be deeply faithful if you like, but making a show of your faithfulness is hypocritical and obnoxious.
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Let me add that it is possible to be deeply religious without being ostentatious about it, and hence, it is possible to be pious without necessarily being obnoxious, but I certainly agree that no one is obligated to be pious. Piety is optional.
the boy is pious
The priest was a pious man who believed in divine will.The nun was not fooled by the pious expressions on the faces of the mischievous children.
The word pious has two syllables: pi ous
He is a pious man. She is a pious woman.
Bolesław the Pious was born in 1224.
He is pious, or believing in many religions.
Henry II the Pious was born in 1207.
Farshad Pious was born on 1962-01-12.
Sulpitius the Pious died on 646-01-17.
Bolesław the Pious died on 1279-04-14.
The nuns living in that convent live holy, pious lives.
King Louis the Pious was born on April 16, 778.