IPA: /ʌnˌkrɒnəˈlɒdʒɪkəl/
KK: /ʌnˌkrɒnəˈlɒdʒɪkəl/
Describing something that does not follow a sequence of time or events in the order they occurred.
The film presented its story in an unchronological manner, jumping back and forth in time.
Unchronological → It is formed from "un-" (meaning not), "chrono-" (from Greek "chronos", meaning time), and "logical" (from Greek "logikos", meaning pertaining to reason or order). The word describes something that is not arranged in the order of time.
Think of 'not' ('un-') being applied to 'time' ('chrono-') and 'order' ('logical'). This helps you remember that 'unchronological' refers to something that does not follow the order of time.