As an adjective, "solo" means performed, done, or undertaken by a single person or individual, without assistance or accompaniment. For example: "He performed a solo piano recital."
As an adverb, "solo" means alone or without accompaniment. For example: "I decided to go solo and start my own business."
As a noun, "solo" refers to a piece of music or a dance performance performed by a single person, without accompaniment. For example: "The ballerina performed a beautiful solo during the ballet."
In sports, "solo" can refer to a sportsperson or team competing alone against other competitors, not as part of a team or group. For example: "The cyclist won the solo time trial."
Additionally, "solo" can be used as an informal shortened form of the Italian term "soloist," referring to a musician or performer who sings, plays, or dances a solo piece.
The plural form of "solo" is "solos."