B2strange, not known, or not understood: She's an actress whose inner life has remained mysterious, despite the many interviews she has given.He died in mysterious circumstances, and there is still a possibility that it was murder.Confusion, confusing and feeling confusedmysteriously
/-li/adverbC1"Perhaps, and perhaps not," she said mysteriously.Mysteriously, the light came on, although no one was near the switch.Confusion, confusing and feeling confused