subject (one) to (someone or something)
To force one to tolerate, endure, or deal with someone or something. I'm sorry for subjecting you to my dad's political rant. He can't talk about anything else at dinner. They subjected the prisoner to all sorts of physical and mental torture to extract information from him.
subject someone or something to something
to cause someone to endure someone or something. I didn't mean to subject you to Uncle Harry. I am sorry I have to subject you to all this questioning.
subject to something
likely to have something, such as a physical disorder, The sick man was subject to dizzy spells. I am subject to frequent headaches.
subject to
v. To cause someone to undergo or experience something: The commander subjected the troops to daily inspections. The oil platform was subjected to extreme weather.