0 If you use something, you do something with it for a particular purpose. -- używać
2 to treat someone badly in order to get what you want -- wykorzystywać
He was just using me to make his girlfriend jealous.
3 to say or write a particular word or phrase -- używać
4 something that you say when you want or need something -- przydałoby się coś
5 the act of using something, or of being used -- użytkowanie, użycie