a special benefit, favor, or right enjoyed only under special conditions

It is a privilege to vote in this country.

anything of value that gives comfort or pleasure but is not necessary for life or health

A diamond ring is a luxury, not a necessity.

filled with joy or pride, as over success or good fortune

Mark was elated when his soccer team won the championship.

to agree or approve

I will assent to the plan.

to make up lines or music on the spot

The actor had to ad lib when he forgot his lines.

showing lack of ambition or energy

The shiftless hare slept under the tree while the tortoise won the race.

being angry about something that does not seem right

Susan reacted indignantly when her sister received a bigger dessert than she did.

a way that shows shame for having done something bad

Robert shamefacedly told his mother that he broke her favorite vase.