slender

Compared meaning: having a thin body (adjective).

比较义项：身材瘦（形容词）。

• slim

  Slim describes someone attractively thin, often praising a well-toned figure; commonly used for people who work to stay in shape.

  slim形容体态吸引人的瘦，常带褒义，指经过锻炼保持匀称的身材。

  After months of training, she finally felt slim and confident in her swimsuit.

  经过几个月的训练，她终于在泳装下感觉自己苗条又自信。

• skinny

  Skinny simply means very thin, often too thin; it is an everyday, casual word that can sound neutral or slightly negative, especially for someone underfed.

  skinny只是表示很瘦，甚至瘦过了头；这是日常口语用词，语气可能中性，也可能略带贬义，常用来形容看起来营养不良的人。

  Her skinny arms looked like they belonged to a child.

  她的手臂很瘦，看起来像小孩子的手臂。

• slender 本词

  Slender is close to slim but stresses gracefulness and a delicate shape; it is a bit more literary or formal and often describes limbs or figures moving elegantly.

  slender与slim相近，但更强调优雅、纤细的体态；语气略偏文学化或正式，常用来形容手脚或身材的优美线条。

  The dancer's slender legs let her move with effortless grace.

  舞者纤细的双腿让她的动作显得优雅从容。

• bony

  Bony means so thin that the bones are visible or prominent; it has a negative, sometimes alarming tone, suggesting illness, starvation or old age rather than attractiveness.

  bony表示瘦到骨头都露出来或突出，带有负面、甚至令人不安的语气，暗示生病、挨饿或年老，而非有吸引力。

  The stray dog's bony ribs showed through its thin fur.

  那只流浪狗瘦骨嶙峋的肋骨从稀疏的毛下透了出来。

All four mean thin. Slim is positive: an attractively thin, well-toned figure. Skinny is casual and neutral, meaning very thin, sometimes too thin. Slender is close to slim but more literary, stressing gracefulness. Bony is negative: so thin the bones show, suggesting illness.

这几个词都表示瘦，但语气和感情色彩不同：slim和slender多含褒义，形容体态优美；skinny较中性、口语化，形容瘦得有点过头；bony含强烈贬义，形容瘦到骨头突出，暗示营养不良或生病。此处不比较slender表示「微薄的」（如资源、机会等）的其他义项。