Nubivagant

Her nubivagant mind caused her to forget why she entered the room.

She spent the afternoon in a nubivagant state, lost in her daydreams.

He spent the afternoon in a nubivagant state, lost in thought.

The nubivagant team veered away from their project plan.

His nubivagant thoughts often left him lost in his own world.

His nubivagant mind often caused him to lose track of time.