possessedly

/pəˈzɛsɪdli/
adverb
  1. In a manner that suggests being controlled by a strong emotion or supernatural force; frantically or obsessively.
    • He typed possessedly, his fingers flying across the keyboard without pause.
    • The crowd cheered possessedly, as if driven by a single wild mind.
    • She stared possessedly at the old photograph, unable to look away.