Colonized rhymes with:
hellenized, africanized, agonized, aluminized, americanized, antagonized, balkanized, canonized, carbonized, christianized, demonized, disorganized, galvanized, harmonized, hellenized, homogenized, humanized, immunized, lionized, mechanized, nonunionized, organized, patronized, reorganized, revolutionized, scrutinized, synchronized, unionized, unorganized, urbanized
Colonized sounds like:
calmest, challenged, cleanest, cleansed, clenched, climaxed, clinched, collingwood, colonist, columnist