מַר מָרָה
mar (mar) (or (feminine) marah {maw-raw'}) adj.
1. (literally or figuratively) bitter
2. (as noun) bitterness
3. (adverbially) bitterly
[from H4843]
KJV: + angry, bitter(-ly, -ness), chafed, discontented, X great, heavy.
Root(s): H4843
H4843