IPA: /ˌæn.tiˈsʌb.sɪ.di/
KK: /æntiˈsʌb.sɪ.di/
Describing something that is against or opposes financial support given by the government to a business or industry.
The new policy is considered antisubsidy as it aims to reduce government financial support for certain sectors.
Antisubsidy is formed from "anti-" (meaning against) and "subsidium" (from Latin, meaning support or aid). The word refers to a stance or action that opposes financial support or aid, particularly in economic contexts.
Think of being 'against' ('anti-') financial 'support' ('subsidium') — that's why antisubsidy means opposing financial aid.
No commonly confused words.