The prefix sub appears in many words, such as subway and substantial.
For subway, I take it as the way that is completely different from the way that I get used to. Moreover it is not the main way.
Other words with sub, like subcategories and subscript, they all seem that sub makes the concept inferior.
But substantial turns the concept upside down. It means completely the opposite.
So, could someone shed some light on this for me please?
So how do we know when sub is a prefix and when it isn't?
Best Answer
Sub in subway means beneath. A subway is originally and still in most places underground, which is a synonym for the subway in British English
Sub in substantial is not really a prefix
substantial
substance
Perhaps you want to look at English words prefixed with sub