Definition of be sweet on
- He's been sweet on her since they were kids.
: pleasing to the taste
: being or inducing the one of the four basic taste sensations that is typically induced by disaccharides and is mediated especially by receptors in taste buds at the front of the tongue — compare bitter, salt, sour
: containing a sweetening ingredient : not dry
: in a sweet manner
: something that is sweet to the taste: such as
: a food (such as a candy or preserve) having a high sugar content
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