Strong's #4089: pikros (pronounced pik-ros')

perhaps from 4078 (through the idea of piercing); sharp (pungent), i.e. acrid (literally or figuratively):--bitter.

Thayer's Greek Lexicon:

́

pikros

1) bitter

2) metaphorically harsh, virulent

Part of Speech: adjective

Relation: perhaps from G4078 (through the idea of piercing)

Citing in TDNT: 6:122, 839

Usage:

This word is used 2 times:

 

James 3:11: "place sweet water and bitter?"
James 3:14: "But if ye have bitter envying and strife in"