IPA: /ˌɪn.səˈbɔː.dɪ.nət/
KK: /ˌɪn.səˈbɔːr.dɪ.nət/
Not willing to obey rules or authority; showing a lack of respect for those in charge.
The insubordinate employee was reprimanded for ignoring his manager's instructions.
Insubordinate → It is formed from "in-" (meaning not) and "subordinare" (from Latin, meaning to arrange under or subordinate). The word describes someone who is not arranged under authority or who does not obey orders.
Think of someone who is 'not' ('in-') 'under' ('subordinare') authority — that's why insubordinate means not obeying authority.