| 释义 | 
		leaven noun  /ˈlevn/   /ˈlevn/ [uncountable]                         jump to other results - a substance, especially yeast, that is added to bread before it is cooked to make it rise
-  (figurative) A few jokes add leaven to a boring speech.
 
 Word OriginMiddle English: from Old French levain, based on Latin levamen ‘relief’ (literally ‘means of raising’), from levare ‘to lift’.  
 leaven verb  /ˈlevn/   /ˈlevn/ [often passive] (formal)                         jump to other results - to make something more interesting or cheerful by adding something to it
-  be leavened (with something) Her speech was leavened with a touch of humour.
 
 Word OriginMiddle English: from Old French levain, based on Latin levamen ‘relief’ (literally ‘means of raising’), from levare ‘to lift’.  
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