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be + bitchy
bitchy 作表语时，主语常指人，表示某人言语或态度刻薄。
She can be really bitchy when she is tired.
她累的时候可能会非常刻薄。
恶意的；刻毒的；尖酸刻薄的
先理解核心含义，再看它在真实句子里的用法。
恶意的；刻毒的；尖酸刻薄的
marked by or arising from malice
She can be really bitchy when she is tired.
她累的时候可能会非常刻薄。
开下流玩笑的；好挑剔的
s. marked by or arising from malice
She made a bitchy comment about her colleague's presentation.
她对同事的演示说了一句尖酸刻薄的话。
His bitchy remarks during the meeting upset everyone.
他在会议上恶毒的言论让大家都不高兴。
I try to avoid that group because they can be really bitchy.
我尽量避开那群人，因为他们可能非常刻薄。
bitchy 作表语时，主语常指人，表示某人言语或态度刻薄。
She can be really bitchy when she is tired.
她累的时候可能会非常刻薄。
bitchy 常放在表示言语或行为的名词前，如 remark、comment、joke。
He made a bitchy remark about her outfit.
他对她的衣着说了句刻薄的话。
about 后接名词或动名词，引出令人不悦或在意的话题。
Don't be so bitchy about the plan.
别对这个计划这么刻薄。
Not this
She bitchy to me.
Use this
She is bitchy to me.
汉语里形容词可直接作谓语（她对我很刻薄），但英语形容词不能独立作谓语，必须用系动词 be；加上 is 后句子才有谓语动词。
Not this
I don't like her bitchy.
Use this
I don't like her bitchy side.
汉语可以说“她的刻薄”，把形容词当名词用；英语中形容词不能单独作名词，需补上名词 side，让 bitchy 作定语来保持原意。
Not this
Stop bitchy about the food.
Use this
Stop being bitchy about the food.
stop 后要接动词-ing 形式，bitchy 是形容词，不能直接跟在 stop 后；加上 being 构成“stop being + 形容词”，表示“停止表现刻薄”。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
尖刻的评论
She made a bitchy comment about her coworker's outfit.
她对自己同事的着装发表了一句尖刻的评论。
恶毒的言语
I was hurt by his bitchy remark about my work.
他对我工作说的那句恶毒话让我很受伤。
尖酸刻薄的态度
Her bitchy attitude made the meeting uncomfortable.
她尖酸刻薄的态度让会议气氛很不舒服。
刻薄的语气
Don't use that bitchy tone with me.
别用那种刻薄的语气跟我说话。
变得尖酸刻薄
He gets bitchy when he's tired.
他累了的时候会变得尖酸刻薄。
Use bitchy naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 bitchy 想成一只 ‘bitch’（坏脾气的母狗）：言语带刺、恶意挑剔，尖酸刻薄。
语域：informal 常见场景：日常对话、社交媒体评论 bitchy 比较口语化且带贬义，多用于日常聊天或网络评论中形容言语刻薄、带有恶意；正式写作中不太常用。
以 -itchy 结尾的词（itchy, twitchy, glitchy, witchy）都与 bitchy（/ˈbɪtʃi/）押韵，韵尾都是 /ɪtʃi/。注意拼写相似的 patchy（/ˈpætʃi/）和 bitty（/ˈbɪti/）发音不同：patchy 的元音是 /æ/，bitty 以 /ti/ 结尾。
Dictionary facts from ECDICT, WIKTIONARY.