1) of one mind, of one accord
++++
This word is made up of two words "sun" (together with) and psuchos
(soul, self, inner life, or the seat of the feelings, desires,
affections). So the word refers to being united in spirit or
harmonious (A&G). Paul desired the Philippians to be united in
their affections - one in Christ in all desires! Used only here
in the NT. (Wayne Steury)

from 4862 and 5590; co-spirited, i.e. similar in sentiment: KJV -- like-minded.
see GREEK for 4862
see GREEK for 5590