thin

Compared meaning: very thin in texture (adjective).

比较义项：形容质地或厚度上很薄、纤细（adj.）。

• fine

  Fine describes something so thin it feels delicate or high-quality, often praising fine hair, fabric, or thread; it never suggests cheapness.

  fine 形容某样东西薄得让人觉得精致或上乘，常用来称赞纤细的头发、织物或线，从不带廉价的意味。

  Her fine blonde hair blew easily in the wind.

  她纤细的金发在风中轻易地飘动。

• thin 本词

  Thin is the neutral, everyday word for a small distance between two sides, used for objects, materials, or people, with no judgment about quality.

  thin 是日常中性的说法，指两侧之间的距离很小，可以用来形容物体、材料或人，不带任何关于质量的评价。

  He sliced the bread into thin, even slices for the sandwiches.

  他把面包切成薄而均匀的片，用来做三明治。

• sleazy

  Sleazy specifically describes fabric or clothing that is thin and cheaply made, carrying a negative, informal judgment about poor quality.

  sleazy 专门形容又薄又廉价的织物或衣服，带有贬义和非正式的语气，暗示质量低劣。

  The jacket was made of sleazy nylon that tore after one wash.

  这件夹克是用廉价的薄尼龙做的，洗一次就破了。

All three can describe something thin, but the judgment differs. Fine means so thin it feels delicate or high-quality, like fine hair or fabric. Thin is neutral, just a small distance between two sides, with no judgment. Sleazy describes cheap fabric, with a negative tone.

这三个词都可以形容物体“很薄”，但语气和评价色彩不同：fine 强调薄而精致、通常带褒义；thin 是中性的日常说法；sleazy 则带贬义，形容又薄又廉价的材质。这里不比较 fine 的“晴朗的”“健康的”等其他常见义项。

Compared meaning: thin in body (adjective).

比较义项：瘦的（形容词，指人或动物体型偏瘦）。

• lean

  Lean stresses having little fat and often implies muscularity or fitness; typically describes athletes, meat, or a fit build, with a positive or neutral tone.

  lean强调脂肪少，常暗示健壮或健美，多用来形容运动员、瘦肉或健康的体型，语气中性偏褒义。

  After months of training, the boxer had a lean, muscular body.

  经过几个月的训练，这位拳击手拥有精瘦而结实的身体。

• thin 本词

  Thin is the neutral, general word for low body fat, without implying either good health or muscle; it simply states body size, more plainly than the others.

  thin是中性、笼统的说法，表示体脂低，不暗示健康或肌肉，只是单纯陈述体型大小，语气比其他几个词更平淡。

  She's naturally thin, but she eats a lot every day.

  她天生很瘦，但她每天都吃很多东西。

• skinny

  Skinny means very thin, often informally, and can sound critical or negative, suggesting someone looks too thin or unhealthy rather than fit.

  skinny表示很瘦，语气较口语化，常带贬义，暗示某人瘦得过分或不健康，而不是健美。

  He was so skinny after the illness that his ribs were visible.

  他生病后瘦得连肋骨都看得见。

• slender

  Slender combines thinness with grace and elegance, giving a flattering, often literary tone; it typically describes a woman's figure or a delicate build, not a muscular body.

  slender把瘦和优雅结合在一起，语气带有褒义和文学色彩，多用于形容女性的身材或纤细的体态，而不是肌肉发达的身体。

  The ballerina moved with grace, her slender arms extended gracefully.

  这位芭蕾舞演员优雅地移动，纤细的手臂舒展自如。

Lean, thin, skinny and slender all describe a thin body, with different tones. Lean suggests fitness or muscle. Thin is neutral and general. Skinny sounds negative. Slender adds grace, often for a woman's figure. This excludes lean as a verb, and slender meaning 'small amount'.

这四个词都表示“瘦”，语气和感情色彩不同：lean多指健美、有肌肉的瘦；thin最中性笼统；skinny口语化，常带贬义；slender强调优雅纤细，语气偏褒义。这里不比较lean作动词表示“倚靠”的义项（如lean against the wall，倚靠墙壁），也不比较slender表示“微薄的”的义项（如slender income，微薄的收入）。