To Slow Up Meaning. The child may feel scared or anxious when faced with unfamiliar people or situations. Slow on the uptake.
The car began to slow up2. There is a way to break the stranglehold of complexity. See full dictionary entry for slow.
The car began to slow down Id like to know what the difference of meaning isThere is absolutely no difference between the two with regard to meaning.
Slow-up definition a delay or retardation in progress or activity. Jims a little slow on the uptake so you might want to check that hes following your instructions. He or she is very sensitive and somewhat withdrawn. Definition of slow up.