1) straight, level
2) straight forward, upright, true, sincere
3) straightway, immediately, forthwith
Part of Speech: adjective
Perhaps from G2095 and G5087; straight, that is, (literally) level, or (figuratively) true; adverbially (of time) at once: - anon, by and by, forthwith, immediately, straightway.
|(εὐθεῖα ὁδός) just way of life||88.18|
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 εὐθύς; click on the second column to search for that grammatical form of the root εὐθύς; click on the third column to search for that word and grammatical form; click on the total to search for the root εὐθύς.