Strong's G50 — ἀγνοέω (verb)
agnoeo (ag-no-eh'-o) v.
1. not to know (through lack of information or intelligence)
2. (by implication) to ignore (through dislike, disinterest, or unwillingness)
[from G1 (as a negative particle) and G3539]
KJV: (be) ignorant(-ly), not know, not understand, unknown 
Root(s): G1, G3539 
Hebrew root: νοιέω
Occurrences: 22