02401 "אט-- chata'ah khat-aw-aw'  
from 02399; TWOT-638d; n f  
1) sin, sin offering  
1a) sin  
1b) sin offering

Genesis 20:9 Then Abimelech called Abraham, and said to him, What hast thou done to us? and what have I offended thee, that thou hast brought on me and on my kingdom a great sin ? thou hast done deeds to me that ought not to be done.  
Exodus 32:21 And Moses said to Aaron, What did this people to thee, that thou hast brought so great a sin upon them?  
Exodus 32:30 And it came to pass on the morrow, that Moses said to the people, Ye have sinned a great sin: and now I will go up to the LORD; peradventure I shall make an atonement for your sin.  
Exodus 32:31 And Moses returned to the LORD, and said, Oh, this people have sinned a great sin, and have made them gods of gold.  
2 Kings 17:21 For he rent Israel from the house of David; and they made Jeroboam the son of Nebat king: and Jeroboam drave Israel from following the LORD, and made them sin a great sin.  
Psalm 32:1 A Psalm of David, Maschil. Blessed is he whose transgression is forgiven, whose sin is covered.  
Psalm 40:6 Sacrifice and offering thou didst not desire; mine ears hast thou opened: burnt offering and sin offering hast thou not required.  
Psalm 109:7 When he shall be judged, let him be condemned: and let his prayer become sin.