1) to swear
2) to affirm, promise, threaten, with an oath
3) in swearing to call a person or thing as witness, to invoke, swear by
Part of Speech: verb
Citing in TDNT: 5:176, 683
A prolonged form of a primary but obsolete word, ὄμω omô, for which another prolonged form (ὀμόω omoô om-o'-o) is used in certain tenses. To swear, that is, take (or declare on) oath: - swear.
|make an oath||33.463|
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 ὀμνύω; click on the second column to search for that grammatical form of the root ὀμνύω; click on the third column to search for that word and grammatical form; click on the total to search for the root ὀμνύω.