inkhorn term

An obscure term from another language (most often Latin or Greek), typically used in an attempt to highlight the speaker's intelligence. I can't stand that guy and his inkhorn terms—I feel like I need to have a dictionary on hand just to talk to him! Anybody who uses inkhorn terms that much must be really insecure about people thinking they're smart. Let's cut back on the inkhorn terms so that people can actually understand what you're trying to convey in your speech.