A 20 year old male patient, is unhappy with the appearance of his front tooth and wants to get it straightened. According to Lischer’s modification, the central incisor can be aptly classified as:
Lischer in 1933 further modified Angle’s classification by giving substitute names:

CL I (Neutrocclusion)
CL II (Distocclusion) 
CL III (Mesiocclusion)

 He also proposed terms to designate individual tooth malposition:

Mesioversion: Mesial to normal position
Distoversion: Distal to normal position
Linguoversion: Crossbite
Labioversion: Increased overjet
Infraversion: Submerged tooth
Supraversion: Supraerupted tooth
Axiversion: Abnormal inclination
Torsiversion: Rotated tooth
Transversion: Transposed tooth
Perversion: Impacted tooth

Ref: Kharbanda OP. Orthodontics: Diagnosis of & Management of Malocclusion & Dentofacial Deformities. 3rd edition page 333
Image: Kotha SB. Intra-alveolar auto-transplantation to correct a single tooth rotation: A case report with four years of follow-up. Saudi Journal of Oral Sciences. 2014 Jul 1;1(2):110.
Torsiversion
Perversion
Transversion
Axiversion