Strong's #50: agnoeo (pronounced ag-no-eh'-o)

from 1 (as a negative particle) and 3539; not to know (through lack of information or intelligence); by implication, to ignore (through disinclination):--(be) ignorant(-ly), not know, not understand, unknown.

Thayer's Greek Lexicon:

̓́

agnoeō

1) to be ignorant, not to know

2) not to understand, unknown

3) to err or sin through mistake, to be wrong

Part of Speech: verb

Relation: from G1 (as a negative particle) and G3539

Citing in TDNT: 1:115, 18

Usage:

This word is used 22 times:

 

Mark 9:32: "But they understood not that saying, and were afraid to ask him."
Luke 9:45: "But they understood not this saying, and it was hid"
Acts 13:27: "and their rulers, because they knew him not, nor yet the voices"
Acts 17:23: "with this inscription, TO THE UNKNOWN GOD. Whom therefore ye ignorantly worship, him"
Romans 1:13: "Now I would not have you ignorant, brethren, that oftentimes"
Romans 2:4: "forbearance and longsuffering; not knowing that the goodness of God"
Romans 6:3: " Know ye not, that so many of us as were baptized into Jesus Christ"
Romans 7:1: " Know ye not, brethren, (for I speak to them that know the law,) how that"
Romans 10:3: "For they being ignorant of God's righteousness, and going about to establish their own"
Romans 11:25: "not, brethren, that ye should be ignorant of this mystery, lest ye should be"
1 Corinthians 10:1: "I would not that ye should be ignorant, how that all our fathers"
1 Corinthians 12:1: "I would not have you ignorant."
1 Corinthians 14:38: "But if any man be ignorant, let him be ignorant."
1 Corinthians 14:38: "if any man be ignorant, let him be ignorant."
2 Corinthians 1:8: "we would not, brethren, have you ignorant of our trouble"
2 Corinthians 2:11: "Satan should get an advantage of us: for we are not ignorant of his devices."
2 Corinthians 6:9: "As unknown, and yet well known; as dying, and, behold,"
Galatians 1:22: "And was unknown by face unto the churches of Judea which"
1 Thessalonians 4:13: "I would not have you to be ignorant, brethren, concerning them which are asleep, that"
1 Timothy 1:13: "I obtained mercy, because I did it ignorantly in unbelief."
Hebrews 5:2: "Who can have compassion on the ignorant, and on them that are out of the way; for that he"
2 Peter 2:12: "destroyed, speak evil of the things that they understand not; and shall utterly perish in their own"