afflicted
A word to put in front of 'on' to make a new word is up (upon).
A word with another word put in the middle is called a compound word or a portmanteau.
Another word for apply is put in place
to put on
"Stress out"? That's not really much of a word, more of a phrase. "Stressing out" means when your put under too much pressure or stress than you can bare.
Another word for "Put" would be "Place".
To impose, put upon; to establish.
ambition
explain
insult
no
Collocate is the event in which one word is put beside another word (juxtaposed) more regularly than would happen just by change. For example, some words just naturally go together, such as "blonde hair" or "once upon".