droop
verb- [intransitive]
to bend, hang or move downwards, especially because of being weak or tired (尤指因衰弱或疲劳)低垂,垂落,垂下 - [intransitive]
to become sad or depressed Topics Feelingsc2沮丧;消沉;垂头丧气
Word OriginMiddle English: from Old Norse drúpa ‘hang the head’; related to drip and drop.