The Greek word anandreia literally means “unmanliness.” “Coward” in English is related to cobard in Spanish and codardo in Italian. It is akin to the latin word cauda, which means “tail” and implies the idea of an animal scurrying off with its tail between its legs.
Anandreia is not a word used by the New Testament writers. Instead the word for coward used in the NT is deilos. See Mark 4:40-41, 2 Tim 1:7 and Revelation 21:8.
ἀνανδρία From ἄνανδρος
1. want of manhood, Euripides, Plato, etc.
2. unmanliness, cowardice, Aeschylus, etc.