Part of Speech: preposition
Citing in TDNT: 7:766, 1102
A primary preposition denoting union; with or together (but much closer than G3326 or G3844), that is, by association, companionship, process, resemblance, possession, instrumentality, addition, etc.: - beside, with. In compounds it has similar applications, including completeness.
|b with (addition)||89.105|
|a with (association)||89.107|
|(σὺν χειρί) with the help of||90.2|
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 σύν; click on the second column to search for that grammatical form of the root σύν; click on the third column to search for that word and grammatical form; click on the total to search for the root σύν.