markdown
A reduction in price.
Joan asked, "Do you like my new sandals? They were markdowns at Marshall Field's."
mind one's own business
To not interfere in the affairs of others.
He finally got tired of her criticism and told her to mind her own business.
nail down
To make certain; make sure; settle.
Joe had a hard time selling his car, but he finally nailed the sale down when he got his friend Sam to give him $300.
The New York Yankees nailed down the American League Championship when they beat the Red Sox 3 to 0 on September 15.
narrow down
To limit within very strict margins.
Of the numerous applicants, the list has been narrowed down to just a few.
nervous breakdown
A mild or severe attack of mental illness; a collapse of a person's ability to make decisions and solve problems because of overwork, great mental strain, or the like.
When the mother saw her baby run over, she suffered a nervous breakdown.
nose down
To head down; bring down the nose of.
The big airliner began to nose down for a landing.
The pilot nosed the plane down toward the runway.
of one's own accord
of one's own free will
Without suggestion or help from anyone else; without being told; voluntarily.
On her mother's birthday, Betsy did the dishes of her own accord.
But Johnny hates baths. I can't believe he would take one of his own free will.
off one's high horse
come down off one's high horse
get down off your high horse
Not acting proud and scornful; humble and agreeable.
The girls were so kind to Nancy after her mother died that she came down off her high horse and made friends with them.
Acting friendly again; not angry and unpleasant any more; agreeable.
Sally wouldn't speak to anyone all afternoon because she couldn't go to the movies, but she's off her high horse now.
To become less arrogant; to assume a more modest disposition.
The boastful candidate for Congress quickly came down off his high horse when he was soundly beaten by his opponent.