A shaman (// SHAH-men) is someone who is regarded as having access to, and influence in, the world of benevolent and malevolent spirits, who typically enters into a trance state during a ritual, and practices divination and healing. The word "shaman" probably originates from the Tungusic Evenki language of North Asia. According to ethnolinguist Juha Janhunen, "the word is attested in all of the Tungusic idioms" such as Negidal, Lamut, Udehe/Orochi, Nanai, Ilcha, Orok, Manchu and Ulcha, and "nothing seems to contradict the assumption that the meaning 'shaman' also derives from Proto-Tungusic" and may have roots that extend back in time at least two millennia. The term was introduced to the west after Russian forces conquered the shamanistic Khanate of Kazan in 1552.
The term "shamanism" was first applied by Western anthropologists as outside observers of the ancient religion of the Turks and Mongols, as well as those of the neighbouring Tungusic and Samoyedic-speaking peoples. Upon observing more religious traditions across the world, some Western anthropologists began to also use the term in a very broad sense. The term was used to describe unrelated magico-religious practices found within the ethnic religions of other parts of Asia, Africa, Australasia and even completely unrelated parts of the Americas, as they believed these practices to be similar to one another.
Mircea Eliade writes, "A first definition of this complex phenomenon, and perhaps the least hazardous, will be: shamanism = 'technique of religious ecstasy'." Shamanism encompasses the premise that shamans are intermediaries or messengers between the human world and the spirit worlds. Shamans are said to treat ailments/illness by mending the soul. Alleviating traumas affecting the soul/spirit restores the physical body of the individual to balance and wholeness. The shaman also enters supernatural realms or dimensions to obtain solutions to problems afflicting the community. Shamans may visit other worlds/dimensions to bring guidance to misguided souls and to ameliorate illnesses of the human soul caused by foreign elements. The shaman operates primarily within the spiritual world, which in turn affects the human world. The restoration of balance results in the elimination of the ailment.
Beliefs and practices that have been categorised this way as "shamanic" have attracted the interest of scholars from a wide variety of disciplines, including anthropologists, archaeologists, historians, religious studies scholars, philosophers and psychologists. Hundreds of books and academic papers on the subject have been produced, with a peer-reviewed academic journal being devoted to the study of shamanism. In the 20th century, many Westerners involved in the counter-cultural movement have created modern magico-religious practices influenced by their ideas of indigenous religions from across the world, creating what has been termed neoshamanism or the neoshamanic movement. It has affected the development of many neopagan practices, as well as faced a backlash and accusations of cultural appropriation, exploitation and misrepresentation when outside observers have tried to represent cultures they do not belong to.
The word "shaman" probably originates from the Evenki word "šamán," most likely from the southwestern dialect spoken by the Sym Evenki peoples. The Tungusic term was subsequently adopted by Russians interacting with the indigenous peoples in Siberia. It is found in the memoirs of the exiled Russian churchman Avvakum.