Definition: The word "bittersweet" is an adjective that describes something that has both positive and negative feelings, or a mix of happiness and sadness.
In literature and poetry, "bittersweet" is often used to convey complex emotions. For instance, a character might feel bittersweet nostalgia when remembering their childhood.
While there are no direct idioms or phrasal verbs that use "bittersweet," you might come across phrases like "sweet sorrow," which also captures a similar feeling of happiness mixed with sadness.
"Bittersweet" is a versatile word that captures the complexity of emotions or flavors.