IPA: //aʊtˈdeɪtɪd//
KK: /aʊtˈdeɪtɪd/
No longer in style or use; something that is considered old-fashioned or not relevant anymore.
The technology in that old computer is outdated and needs to be replaced.
Outdated is formed from "out-" (meaning external or beyond) and "date" (from Latin "datum", meaning something given or a specific time). The word refers to something that is beyond its time or no longer current.
Think of something that is 'beyond' its 'time' — that's why outdated means no longer current.