se propager w języku angielskim

spread [spread, spreading, spreads]▼◼◼◼((intransitive) to proliferate, to become more widely present, to be disseminated)
verb
[UK: spred] [US: ˈspred]

propagate [propagated, propagating, propagates]▼◼◼◻(to have young or issue)
verb
[UK: ˈprɒ.pə.ɡeɪt] [US: ˈprɑː.pə.ˌɡet]