To make something more conservative, or to convert someone to conservative beliefs and practices.
Conservative + -ize verb suffix (from Greek -izein). This is a relatively modern formation (19th-20th century) describing the process of becoming or making more politically or socially conservative.
Conservatize is a verb that shows how political movements try to 'convert' society to their views—it's the same word-building pattern used in modernize, memorize, and legalize!
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