πικρός G4089
pikrós · pik-ros' · Adjective
perhaps from πήγνυμι (through the idea of piercing); sharp (pungent), i.e. acrid (literally or figuratively):--bitter.
2 Occurrences in the King James Bible
James 3:11Doth a fountain send forth at the same place sweet water and bitter?
James 3:14But if ye have bitter envying and strife in your hearts, glory not, and lie not against the truth.