"ACRIMONIOUS"

ACRIMONIOUS
(Adjective)
Meaning:

• Full of spite, bitter, nasty
• Caustic; bitter-tempered' sarcastic; as, acrimonious dispute, language, temper.
• marked by strong resentment or cynicism; "an acrimonious dispute"
• Bitter and sharp in language or tone; rancorous: (See Image: an acrimonious debate between the two candidates.)