Wistful /ˈwɪst.fəl/ adj. 伤感的;(对已不可能发生之事)徒然神往的
meaning: thinking sadly about sth that you would like to have, especially sth in the past that you can no longer have
联想: wist—wish 希望
后缀: -ful 形容词后缀
e.g. I thought about those days in Spain and grew wistful. 我想起了那些在西班牙的日子,思念之情油然而生。