“变憔悴”常见的英文表达有 become haggard、look gaunt/worn-out 等。
become haggard：“haggard”意思是“憔悴的；形容枯槁的”，“become haggard”表示变得憔悴，强调状态从正常到憔悴的转变。例如：After staying up all night to prepare for the exam, she became haggard.（为了准备考试熬了一整夜后，她变得憔悴了。）
look gaunt/worn-out：“gaunt”意为“憔悴的；清瘦的；荒凉的” ，“worn-out”表示“疲惫不堪的；破旧的；憔悴的” ，“look gaunt/worn-out” 侧重于描述外貌看起来憔悴。例如：He has been under a lot of pressure lately and looks gaunt.（他最近压力很大，看起来很憔悴。） / After months of illness, she looked worn-out.（病了几个月后，她看起来很憔悴。）