1. 形容詞
   苦的
   味苦的, 苦味的
   苦澀的
   懷恨的, 充滿仇恨的
   極為不滿的, 不痛快的
   刻薄的, 尖刻的
   慘痛的, 難堪的
   極冷的, 嚴寒刺骨的
   激烈的
   (必接名詞如敵人等)不共戴天的, 勢不兩立的
   

   同義字詞
   acrid,acrimonious,embittered,hard,rancorous,resentful,sore
   afflicting,agonizing,cruel,excruciating,galling,grievous,harrowing,harsh,heartrending,hurtful,painful,tormenting,torturous
   biting,cutting,keen,penetrating,piercing,raw,sharp,shrewd,smarting,stinging
   brutal,burdensome,cruel,excruciating,grievous,grim,hard,harsh,heavy,inhuman,murderous,onerous,oppressive,rough,rugged,searing,severe,stiff,tough,trying
   arctic,bone-chilling,chill,chilly,cold,coldish,cool,coolish,freezing,frigid,frosty,gelid,glacial,ice-cold,icy,nipping,nippy,numbing,polar,shivery,snappy,wintry,wintery
   bleak,chill,chilling,chilly,nipping,nippy,raw,sharp
   aching,agonized,anguished,bemoaning,bewailing,deploring,doleful,dolorous,funeral,grieving,heartbroken,lamentable,lugubrious,mournful,plaintive,plangent,regretful,rueful,sorrowful,sorry,wailing,weeping,woeful
   bad,disagreeable,displeasing,distasteful,harsh,icky,nasty,rotten,sour,uncongenial,unlovely,unpalatable,unpleasant,unpleasing,unsavory,unwelcome,wicked,yucky,yukky
   

2. 副詞
   嚴寒刺骨地
   激烈地
   to the bitter end/
   until the bitter end:
   (戰鬥、堅持、反抗等)到底/
   到最後一刻
   

3. 名詞
   苦味, 辛酸
   /以上複數為"bitters"/
   限定不可數名詞:
   (英式)苦啤酒
   限定複數"bitters":
   苦藥類
   苦味劑
   苦味藥
   苦味補藥
   a bitter end/
   

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例句

1. He gave a bitter laugh.
2. I'm tired of being bitter over him.
3. It really was a bitter disappointment.
4. He was dropped addicted, bitter and mean.
5. What has made this tired women so bitter ?
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