|Easton's Bible Dictionary|
(1 Corinthians 16:22) consists of two Aramean words, Maran'athah, meaning, "our Lord comes," or is "coming." If the latter interpretation is adopted, the meaning of the phrase is, "Our Lord is coming, and he will judge those who have set him at nought." (Comp. Philippians 4:5; James 5:8, 9.)
Noah Webster's Dictionary
(n.) Our Lord cometh; -- an expression used by St. Paul at the conclusion of his first Epistle to the Corinthians (xvi. 22). This word has been used in anathematizing persons for great crimes; as much as to say, May the Lord come quickly to take vengeance of thy crimes. See Anathema.
Int. Standard Bible Encyclopedia
mar-a-nath'-a, mar-an-a'-tha (from Aramaic words, marana' 'athah, "Our Lord cometh, or will come"; according to some, "has come"; to others, "Come!" an invitation for his speedy reappearance (compare Revelation 22:20); maranatha, or maran atha): Used in connection with anathema, "accursed" (1 Corinthians 16:22), but has no necessary connection therewith. It was used by early Christians to add solemn emphasis to previous statement, injunction or adjuration, and seems to have become a sort of watchword; possibly forming part of an early liturgy.
Maranatha (1 Occurrence)
1 Corinthians 16:22 If any man love not the Lord Jesus Christ, let him be Anathema Maranatha. (KJV ASV DBY NAS)