Obsessiveness is a state of being consumed or preoccupied with something to a degree that it interferes with other aspects of one's life. Synonyms for obsessiveness include fixated, consumed, possessed, preoccupied, infatuated and engrossed. These terms describe a level of intensity that goes beyond a mere interest or curiosity and into a realm where the focus becomes all-encompassing and potentially detrimental. Being fixated on something can lead to tunnel vision, while being consumed or possessed by a thought or feeling can cause emotional distress. Preoccupation and infatuation are both indicative of a preoccupation with something, while engrossment suggests a deep immersion or involvement in a particular subject or task.