1. oversee to make sure of something
check up on the children
To 'check up on' someone or something can mean a) to find out if someone is doing what they promised to do or what they said they would do b) to ensure that something is true or correct c) to verify if someone is safe or in need. You can use 'check up on' to see if someone is doing what they are supposed to be doing. "I love this job because I have a lot of autonomy and nobody is checking up on everything I am doing." You might want to verify if something is true or correct by saying: "I'll need to check up on that." or "I'll have someone check up on those figures." You can use it to talk about checking on the welfare of someone. "I need to check up on my neighbour, she was in hospital recently." This is a commonly used phrasal verb in professional and social contexts.