sub·tle/`sʌtḷ; ˈsʌtl/ adj 1 not easy to notice 微妙的，细微的，难以察觉的: subtle changes in climate 气候的细微变化 subtle humour 含蓄的幽默 2 a subtle taste, smell, sound, or colour is pleasant and delicate 〔味道、气味、声音或颜色〕清淡的; 柔和的; 淡雅的: the subtle scent of mint in the air 空气中薄荷的幽香 3 a subtle person skilfully hides what they intend to do or achieve 〔人〕深沉的，做事不露声色的 4 a subtle plan is clever, especially in a way that deceives people 〔计划〕巧妙的; 狡猾的