Antonyms for "lapping up" include words such as rejecting, spurning, denying, and refusing. When someone is rejecting something, they are actively pushing it away, whereas lapping up something implies taking it in eagerly. Similarly, if someone is spurning something, they are showing contempt or disdain towards it, indicating a lack of interest in the thing they are offered. To deny or refuse something indicates a conscious decision to opt-out or say no to what is being offered, unlike lapping up where one accepts an offer with enthusiasm. Overall, these antonyms provide a useful contrast to the positive connotations of lapping up, highlighting the negative or resistant attitudes people can have towards things.