מָר
From LSJ
Ἴση λεαίνης καὶ γυναικὸς ὠμότης → Feritas leaenae quanta, tanta et feminae → Der Löwin Wildheit ist die selbe wie der Frau
English (Strong)
or (feminine) marah; from מָרַר; bitter (literally or figuratively); also (as noun) bitterness, or (adverbially) bitterly: + angry, bitter(-ly, -ness), chafed, discontented, X great, heavy.