IPA: /ˌæntiˈfaʊlɪŋ/
KK: /ˈæntiˌfaʊlɪŋ/
Designed to stop unwanted growth or buildup on surfaces that are submerged in water, like the bottoms of boats.
The boat was coated with antifouling paint to keep barnacles from sticking to it.
Comparative: more antifouling
Superlative: most antifouling
Antifouling is formed from "anti-" (meaning against) and "fouling" (from the verb "foul", which comes from Old English "fūl", meaning dirty or unclean). The term refers to measures taken to prevent the accumulation of unwanted material on surfaces, particularly in marine environments.
Think of 'anti-' meaning against and 'fouling' relating to something becoming dirty or unclean. This helps you remember that antifouling means preventing surfaces from getting dirty.