seriocomically

/ˌsɪrioʊˈkɑmɪkli/
adverb
  1. In a way that is both serious and funny at the same time; with a mix of humor and earnestness.
    • The actor delivered the tragic speech seriocomically, so the audience didn't know whether to cry or chuckle.
    • He seriocomically described his disastrous attempt to bake a cake, making everyone laugh while still feeling his frustration.
    • She seriocomically argued that losing her keys was a sign of a deeper philosophical crisis.