Quick answer
Euphemia is a girl name meaning "to use words of good omen".
Pronunciation: English /juː.ˈfiː.mi.ə/; English /juː.ˈfɛ.mi.ə/.
Meaning and history
The name means "to use words of good omen" from Greek εὐφημέω (euphemeo), a derivative of εὖ ( eu ) meaning "good" and φημί ( phemi ) meaning "to speak, to declare". Saint Euphemia was an early martyr from Chalcedon. This name has been historically common in Scotland, where it was sometimes used as an Anglicized form of Oighrig.
Notes and context
Usage: ancient greek, english | Ancient Greek: Εὐφημία