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English definition of “leaven”

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leaven

verb [T] uk   /ˈlev.ən/ us  
to add a substance to bread or another food made with flour to make it increase in size when it is cooked formal to make something less boring: Even a speech on a serious subject should be leavened with a little humour.
Translations of “leaven”
in Chinese (Traditional) 使發酵, 使變得有趣…
in Chinese (Simplified) 使发酵, 使变得有趣…
(Definition of leaven from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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