The table of suffixes we are using lists
-phobia – exaggerated fear
To the phobic person, the fear is not exaggerated, so we should use a different word – heightened or excessive, say.
Then we could have
ToFear is not an action, it is a state, and different states have different spectrums for their range.
A switch can be on and off, but when you say the switch was on excessively, you are not referring to the on/off state as being excessive. A mental state can be excessive - a hyperstate like hyperactivity.
So where is the thing that is the phobia – it is ToBePhobicAbout, which is a mental state describing an excessive fear of something.
He had a phobia about spiders.
He was agrophobic.
A fear of spiders is a normal state, an excessive fear is not (excessive exceeds the range for normal).
The suffix –phobia will take us to phobic fear, so if we find arachnophobia, we can work out it means an excessive fear of spiders (the suffix -phobia is not a variable, but a constant, explaining its different colour – it is used in a word unravelling system).
When we get the other part of the word, we look to see where we can match it – spider doesn’t match Person, whereas it will match BaseThing, so we have Person Fear Spider.
We can’t just link prefixes and suffixes to words, because as humans we intuitively add all the paraphernalia, the actions and states, to make the structure work. Some relations refer to both action and state – "formation" as an example.
Formation of the sedimentary layer occurred over millions of
years.
The canyon had a large rock formation at its centre.
There are many words like this that can refer to either the process or the result – development, building, replacement.