sign in
To write your name on a special list or in a record book to show that you are present. When you sign in, you write your name on a list to show that you have arrived at your workplace or at some other place, such as a hotel or a club.
Every worker must sign in when coming back to work.
Teachers go to the office and sign in each morning before going to their classrooms.
I'm going to be late. Could you sign me in?
All visitors to the consulate are asked to sign in.
sign on the dotted line
To attach one's signature on an important document, such as a contract, a bill of sales, etc.
The seller said to the buyer, "All you need to do is sign on the dotted line."
silver anniversary
silver wedding
The twenty-fifth wedding anniversary of a couple; the twenty-fifth anniversary of a business or an association, etc.
"The day after tomorrow is Mom and Dad's silver anniversary," Sue said to her brother. "I hope you have a nice present picked out."
sing a different tune
whistle a different tune
sing a new tune
To talk or act in the opposite way; contradict something said before.
Charles said that all smokers should be expelled from the team but he sang a different tune after the coach caught him smoking.
sing for one's supper
To have to work for what one desires.
I realized a long time ago that I had to sing for my supper if I wanted to get ahead in my profession.
sing one's praises
To extol or praise continuously.
The audience left the concert with everyone singing the praises of the young piano virtuoso.
single out
To select or choose one from among many.
There were a lot of pretty girls at the high school prom but Don immediately singled out Sally.
sink in
soak in
To be completely understood; be fully realized or felt.
Everybody laughed at the joke but Joe; it took a moment for it to sink in before he laughed too.
When Frank heard that war had started, it didn't sink in for a long time until his father was drafted into the army.