proliferate
verb
[ prəˈlɪfəreɪt ]
• increase rapidly in number; multiply.
• "the science fiction magazines which proliferated in the 1920s"
Similar:
increase rapidly,
grow rapidly,
multiply,
become more numerous,
mushroom,
snowball,
burgeon,
escalate,
rocket,
run riot,
Origin:
late 19th century: back-formation from proliferation.
