English “bitter” emboldened in James 3:11 was well translated from Greek adjective 4089 pikros. In order to fully understand God’s definition we must follow God’s 2Timothy 2:15, 19-21 directive by studying every word in each verse containing Greek verb 4087 pikraino Greek feminine noun 4088 pikria Greek adjective 4089 pikros and Greek adverb 4090 pikros. Greek verb 4087 pikraino best represents God’s definition translated into English “bitter” in Revelation 10:9 and 10 in the context of Revelation 10:5-11. Greek feminine noun 4088 pikria best represents God’s definition translated into English “bitterness” in Romans 3:14 in the context of Romans 3:10-31 understanding that there was a flesh Old Testament covenant/contract/law between God and the Israelites. There is a spiritual New Testament/covenant contract/law between God and “seven thousand” “elect” “election”. Greek adjective 4089 pikros best represents God’s definition translated into English “bitter” in James 3:14. Greek adverb 4090 pikros best represents God’s definition translated into English “bitterly” in Matthew 26:75 in the context of Matthew 26:69-75 understanding that Jesus’ apostle Peter “wept bitterly” subsequent to Peter’s own denial of Christ.