the world > time > change > change to something else, transformation > sudden or complete change > cause sudden or complete change [verb (transitive)] > as agent (2)
leaven1534
transitive. figurative and in figurative contexts. To permeate with a transforming influence as leaven does; to imbue or mingle with some tempering…
ferment1823
transitive. To subject to fermentation; to cause fermentation in.