Commonly used when a baby regurgitates milk or food shortly after feeding.

Baby-related

'Spit up' implies a gentle and common process, different from the forceful action of vomiting.

Not Vomiting

Spit-up usually happens soon after a baby has been fed, not hours later.

Spitting up can indicate illness, like an infection or digestive problem.

It often describes an involuntary, immediate reaction to discomfort or nausea.

Can be used for unexpected expulsion of saliva, not necessarily due to being sick.

This use of 'spit up' suggests a casual or rude way of mentioning something.

Used when someone brings up a topic suddenly, without introduction or context.

Can annoy others if the subject is controversial or divisive.