bit‧ter‧sweet /ˌbɪtəˈswiːt◂ $ -tər-/ adjective

1. feelings, memories, or experiences that are bittersweet are happy and sad at the same time:
bittersweet memories of childhood

2. a taste or smell that is bittersweet is both sweet and bitter at the same time

[TahlilGaran] Dictionary of Contemporary English ▲