Strong's G2520 — καθήκω (verb)
katheko (kath-ay'-ko) v.
1. to reach to
2. (neuter of present active participle, figuratively as adjective) becoming
[from G2596 and G2240]
KJV: convenient, fit 
Root(s): G2596, G2240 
Hebrew root: ἥκω
Occurrences: 2