Felix = "happy"
1) a Roman procurator of Judea appointed by the emperor Claudius in A.D. 53. He ruled the province in a mean, cruel, and profligate manner. His period of office was full of troubles and seditions. Paul was brought before Felix at Caesarea. He was remanded in prison, and kept there two years in hopes of extorting money from him. Act 24:26,Act 24:27. At the end of that time Porcius Festus was appointed to supersede Felix, who, on his return to Rome, was accused by the Jews in Caesarea, and would have suffered the penalty due to his atrocities had not his brother Pallas prevailed with the emperor Nero to spare him. The wife of Felix was Drusilla, daughter of Herod Agrippa I., who was his third wife and whom he persuaded to leave her husband and marry him.
Part of Speech: noun proper masculine
Of Latin origin; happy; Phelix (that is, Felix), a Roman: - Felix.
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root Φῆλιξ; click on the second column to search for that grammatical form of the root Φῆλιξ; click on the third column to search for that word and grammatical form; click on the total to search for the root Φῆλιξ.