G3524–νηφαλέος–nēphaleos

The Bishop, then, is to be a man of good name, the husband of one wife, self-controlled, serious-minded, having respect for order, opening his house freely to guests, a ready teacher;

νηφάλιον, nēphalion “sober,”

Women are to be serious in behaviour, saying no evil of others, controlling themselves, true in all things.

νηφαλίους, nēphalious “clear-minded,”

That old men are to be simple in their tastes, serious, wise, true in faith, in love, and of a quiet mind.

νηφαλίους nēphalious “sober-minded”