"瘦"的英文是"thin".
来源：
"Thin"这个单词最早可以追溯到古英语时期，当时它的发音是"þynne"。它是由古英语"þynne"和古北欧语"þynnr"演变而来，最终来源于古拉丁语"tenuis"，意思是"薄的"、"细的"。
一些例句：
She's very thin. (她很瘦。)
The walls were thin and the noise from the street was loud. (墙很薄，街上的噪音很大。)
The soup is too thin. Can you add some more broth? (这汤太稀了，能再加点汤汁吗？)
来源：
"Thin"这个单词最早可以追溯到古英语时期，当时它的发音是"þynne"。它是由古英语"þynne"和古北欧语"þynnr"演变而来，最终来源于古拉丁语"tenuis"，意思是"薄的"、"细的"。
一些例句：
She's very thin. (她很瘦。)
The walls were thin and the noise from the street was loud. (墙很薄，街上的噪音很大。)
The soup is too thin. Can you add some more broth? (这汤太稀了，能再加点汤汁吗？)