IPA: /ˌæn.ti.dɪˈvɛl.əp.mənt/
KK: /æntiˈdɛvələpmənt/
Opposed to the process of growth or improvement, especially in relation to land or community development.
The antidevelopment policies have sparked controversy among local residents.
Antidevelopment is formed from "anti-" (meaning against) and "development" (from Old French *desvelopper*, meaning to unwrap or unfold). The word refers to actions or policies that are against or hinder development.
Think of 'against' ('anti-') something that is 'unfolding' or 'growing' ('development'). This helps you remember that 'antidevelopment' means opposing growth or progress.