The opposite of disgruntled is:

Moderation means:

In that case, Mr. Yanukovich would have to call parliamentary elections, which could cause more political discord in Ukraine.

Source: New York Times

In this sentence, discord means:

haggard means :

________ sounds like what it is — dissatisfied, grunting and grumbling. You could become a ________ employee if your boss swipes all your best ideas without giving you credit (or a raise).

cater means to:

“The tide was going in one direction for years—even the socialists privatised, we had less political interference and more financial savvy,” says an investment banker in Paris, “but now we’re stepping backwards.”

Source: Economist

In this sentence, savvy means:

When you give your active support to idea or cause, you are showing your ________ for that cause. Her ________ for the animal rights group helped them raise a lot of money.

cater means to:

Eating foods in ________ is a key to maintaining a healthy diet. That means you have a little bit of everything, rather than gorging, say, on steak and ice cream.

canon means :

________ is the strife and tension that arises when two sides disagree on something, like the high-pitched screaming of two kids fighting over the front seat of the car.

The adjective______________ describes something that's essential or basic, like the ___________ urge to protect yourself and your family from harm.

____________ (one “n”) refers to a collection of rules or texts that are considered to be authoritative. Shakespeare and Chaucer are part of the ___________ of Western literature, so you might read their work in an English class.