IPA: /ˌʌndɪˈvɛləpt/
KK: /ʌndɪˈvɛləpt/
Not fully developed or advanced, often referring to regions, economies, or ideas that have not reached their full potential.
The undeveloped area lacked basic infrastructure and services.
Comparative: more undeveloped
Superlative: most undeveloped
Undeveloped → It is formed from "un-" (meaning not) and "develop" (from Old French *desveloper*, meaning to unwrap or unfold). The word "undeveloped" means not fully unfolded or lacking development.
Think of 'not' ('un-') having something 'unfolded' or 'unwrapped' ('develop') — that's why undeveloped means not fully developed.