If in a conversation someone tells a word you don't know, do you ask for the meaning or pretend to know it, to not look like an ignorant? I strongly promote asking everything you don't know, it's the only way to stop ignorance, being curious, however, people tend to feel bad about themselves everytime someone explains something to them, like if it's being done with negative intentions, when the whole purpose of explaining, is helping you to know something new. Be better.