Strong's G1876 — ἐπάναγκες (adverb)
epanagkes (ep-an'-ang-kes) adv.
1. (adverbially) on necessity, i.e. necessarily
[neuter of a presumed compound of G1909 and G318]
KJV: necessary 
Root(s): G1909, G318 
Hebrew root: ἀναγκή
Occurrences: 1