Greek word
euṓnymos
εὐώνυμος
What it means
properly, well-named, i.e. the left
properly, well-named (good-omened), i.e. the left (which was the lucky side among the pagan Greeks); neuter as adverbial, at the left hand
Where it comes from
from eû (εὖ) and ónoma (ὄνομα)