oily

Compared meaning: containing a lot of fat or oil (adjective).

比较义项：含有大量油脂或脂肪（形容词）。

• fat

  Describes meat with a lot of visible fat, as opposed to lean; a blunt, everyday word mainly used before 'meat' or 'bacon', rarely used for other greasy foods.

  多用于形容带有大量肥肉的肉类（与“瘦”相对），语气直白、口语化，通常只用在“肉”“培根”等词前面，很少用来形容其他油腻的食物。

  She trimmed the fat meat off before frying the pork chops.

  她在煎猪排之前把肥肉切掉了。

• greasy

  Suggests a slick, unpleasant coating of oil or fat, often with a negative tone; common for fried food and also greasy skin or hair.

  强调表面沾满油脂、让人觉得不舒服，语气偏负面，常用来形容炸食品，也可以形容出油的皮肤或头发。

  The greasy pizza left oil stains on the napkin.

  油腻的比萨在餐巾纸上留下了油渍。

• fatty

  A neutral, clinical term for high fat content, typical in nutrition and medical contexts, as in 'fatty food', 'fatty liver' or 'fatty acids'.

  语气中性、偏专业，常见于营养学或医学语境，如“高脂肪食物”“脂肪肝”“脂肪酸”等表达。

  Doctors advise cutting back on fatty foods to protect your heart.

  医生建议少吃高脂肪食物以保护心脏。

• oily 本词

  Describes something naturally producing or coated with oil, such as skin or hair, without the negative tone of 'greasy'; also used in 'oily fish' like salmon.

  形容本身出油或表面沾油的东西，如皮肤、头发，语气不像 greasy 那样负面；也常用在“oily fish”（油性鱼）这样的说法中，比如三文鱼。

  Her oily skin starts to shine again by midafternoon.

  她的皮肤很爱出油，到下午就又开始发亮了。

Fat, greasy, fatty, oily all mean having much fat or oil. Fat: meat with visible fat, blunt. Greasy: an unpleasant oily coating, often negative. Fatty: neutral, scientific (fatty food). Oily: naturally coated in oil, like skin or hair.

这四个词在“含油脂多”这个意思上很接近，但语气和使用场合不同：fat 多用于形容带肥肉的肉类，语气直白甚至有点粗略；greasy 强调表面油腻、让人不舒服，语气偏负面；fatty 是营养学、医学语境里中性的专业说法；oily 指本身出油或沾有油，语气比较中性。这里不比较 fat 表示“（人、动物）肥胖”的义项，也不比较 oily 表示“油滑、讨好”的引申义。

Compared meaning: insincere, not genuine, in attitude or speech (adjective).

比较义项：不真诚、虚伪的（态度或言辞）（形容词）。

• false

  A general, neutral word for insincere or not genuine feelings, praise, smiles or promises; common in everyday speech and writing.

  泛指不真诚、不真实的，用于形容感情、赞美、微笑或承诺等，语气中性，日常口语和书面语中都常用。

  She flashed a false smile at her rival before walking away.

  她对她的对手挤出一个虚伪的微笑，然后转身离开了。

• oily 本词

  Describes a smug, flattering manner or way of speaking meant to please someone insincerely; informal and clearly disapproving, often used for salesmen or smooth talkers.

  形容为讨好他人而表现出的油滑、谄媚的态度或说话方式，口语化且带有明显贬义，常用来形容推销员或油嘴滑舌的人。

  The salesman gave an oily compliment that made everyone squirm.

  那位推销员说了一句油嘴滑舌的恭维话，让大家都感到不自在。

Both describe insincere attitudes or words, but oily is stronger. False is general and neutral, for insincere feelings, praise, or promises. Oily describes a smug, flattering manner meant to please insincerely; informal and disapproving, often for smooth-talking salesmen. False's other senses, like 'wrong', aren't compared.

这两个词都可以形容不真诚的态度，但语气强弱不同：false 是中性、通用的“虚伪的”，可以修饰感情、微笑、赞美等；oily 语气更强烈，带有明显贬义，专指为讨好别人而表现出的油滑、谄媚的说话方式或态度。这里不比较 false 的“错误的、不正确的”等其他义项。