IPA: /ˈɛn.dʒɪn.ləs/
KK: /ˈɛnʤɪnləs/
Describing something that does not have an engine.
The engineless boat floated silently on the water.
Engineless → It is formed from "engine" (from Old French *engin*, meaning skill or cleverness, later referring to a machine) and "-less" (meaning without). The word "engineless" means without an engine or lacking a machine.
Think of being 'without' ('-less') a 'machine' or 'skill' ('engine') — that's what engineless means.