to become lower in level, amount, or value
Share prices could fall if the company reports poor earnings.
As night came, the temperature began to fall.
to be defeated, captured, or killed, especially in war or competition
The fortress finally fell after a long siege.
Many brave soldiers fell on that field.
to invite someone to compete or try something difficult
Leo challenged his sister to a game of checkers.
The coach will challenge the runners to beat their own records.
used to show strong approval or delight
You finished the project early? Excellent!
“I got promoted today.” — “Excellent!”
✦ Derived from the adjective “excellent” used elliptically as an exclamation since the 17th century.
