IPA: //ˌʌnˈdɛlɪɡeɪtɪd//
KK: /ʌnˈdɛlɪɡeɪtɪd/
Not assigned or transferred to someone else; remaining with the original person or authority.
The tasks were left undelegated, causing confusion among the team members.
Undelegated → It is formed from "un-" (meaning not) and "delegated" (from Latin "delegare", meaning to assign or entrust). The word "undelegated" means not assigned or entrusted to someone.
Think of 'not' ('un-') having been 'assigned' ('delegated') to someone — that's why undelegated means something that hasn't been assigned.