IPA: //ʌnˈtɛndɪd//
KK: /ʌnˈtɛndɪd/
Not cared for or looked after; neglected.
The garden was left untended for years, resulting in overgrown weeds and wild plants.
Untended → It is formed from "un-" (meaning not) and "tend" (from Old French *tendre*, meaning to stretch or to care for). The word "untended" means not cared for or neglected.
Think of something that is 'not cared for' — 'un-' means not, and 'tend' relates to caring or stretching.