IPA: //ʌnˈkɔːriəˌɡræft//
KK: /ʌnˈkɔrɪəˌgræft/
Describing something that has not been planned or organized in a specific way, especially in dance or performance.
The dancers moved in an unchoreographed manner, creating a spontaneous and lively atmosphere.
Unchoreographed → It is formed from "un-" (meaning not) and "choreographed" (from Greek "choreia" meaning dance and "grapho" meaning to write). The word means not arranged or written out in a dance form.
Think of 'not' ('un-') having a 'dance' ('choreia') that is 'written' ('grapho') — that's why unchoreographed means not arranged in a dance.