Strong's G4934 — συντίθεμαι (verb)
suntithemai (soon-tith'-em-ai) v.
1. to place jointly
2. (figuratively) to consent (bargain, stipulate), concur
[middle voice from G4862 and G5087]
KJV: agree, assent, covenant 
Root(s): G4862, G5087 
Hebrew root: τίθημι
Occurrences: 4