IPA: /ɪˈliːɡəlaɪz/
KK: /ɪˈliːɡəlaɪz/
To make something against the law or not allowed by law.
The government decided to illegalize the sale of certain drugs.
Past: illegalized
Past Participle: illegalized
Illegalize → It is formed from "il-" (meaning not), "legal" (from Latin "legalis", meaning lawful), and "-ize" (meaning to make). The word "illegalize" means to make something not lawful or to declare it illegal.
Think of 'not' ('il-') making something 'lawful' ('legal') into something that is 'not lawful' — that's what illegalize means.