From fake flowers to faux food flavors, our world is full of things that are artificial –- that is, produced by humans rather than by nature.
While artificial can simply mean “made by humans,” it’s often used in a negative sense, conveying the idea that an artificial product is inferior to the real thing. If you remark that your friend’s new hair color looks artificial, for example, you’re not paying her a compliment. Artificial can also describe a behavior or expression that seems insincere — much like the smile on your girlfriend’s face if you bring her artificial flowers instead of real ones.