Uneasy describes an uncomfortable feeling. You might feel socially uneasy when dining with your girlfriend's parents if they don't like you very much. Your stomach may also feel uneasy at that same dinner and gurgle in an embarrassing way.
The adjective uneasy has many shades of meaning, most involving mild discomfort. It can refer to a lack of a sense of security. If McDonald's and Burger King team up to develop a new sandwich, that would be an uneasy alliance, because neither side would fully trust the other. Uneasy can also describe causing someone to feel anxious or nervous. If you see someone staring at you mumbling, "That's him, that's the one," you might feel uneasy.