embittered

adjective embittered

• disillusioned — to free from or deprive of illusion, belief, idealism, etc.; disenchant.
• bitter — In a bitter argument or conflict, people argue very angrily or fight very fiercely.
• resentful — full of or marked by resentment.
• sour — having an acid taste, resembling that of vinegar, lemon juice, etc.; tart.
• disaffected — discontented and disloyal, as toward the government or toward authority.