怠慢 (dài màn): to slight; to neglect

Xiao Li, when the customer came into the shop yesterday you kept your head down looking at your phone. If you slight customers like that, who will want to come back and buy anything?

On the wedding day he arrived almost an hour late because of traffic, and afterwards he apologized to the bride again and again, saying he had absolutely not meant to slight her family.

The boss felt that Xiao Wang had a problem with his work attitude lately, often slighting important clients, so he decided to transfer him to another department next month.

My mother complained on the phone that when I went home last month I only stayed half an hour and left without even eating, which was too much of a slight to the family.