IPA: /ˈpaʊə.ləs/
KK: /ˈpaʊərləs/
Not having any strength or ability to control a situation; feeling unable to act or influence events.
After the sudden changes in management, the employees felt powerless to voice their concerns.
Powerless → It is formed from "power" (from Old French *poeir*, meaning to be able or have strength) and "-less" (meaning without). The word "powerless" means without power or strength.
Think of being 'without' ('-less') 'strength' ('power') — that's why powerless means lacking power.