Strong's G180 — ἀκατάπαυστος (adjective)
akatapaustos (ak-at-ap'-au-stos) adj.
1. unrefraining
[from G1 (as a negative particle) and a derivative of G2664]
KJV: that cannot cease 
Root(s): G1, G2664 
Hebrew root: καταπαύω
Occurrences: 1