top-off

[top-awf, -of]

noun

Australian Slang.

1. a person who informs on another, often as if by accident or as a joke.

top off

verb

1. (tr, adverb) to finish or complete, esp with some decisive action

   he topped off the affair by committing suicide

Word History and Origins

Origin of top-off¹

First recorded in 1940–45; noun use of verb phrase top off to inform (on someone)

Idioms and Phrases

Fill a container, especially when it is almost full to begin with. For example, I don't need much gas; just top off the tank, please . [First half of 1900s]

Finish, especially in a spectacular way, as in They topped off their trip with a visit to the White House . [First half of 1800s]

Example Sentences

And if you’re in a rush, a 15-minute top-off will get you several hours of playback time.

Read more on The Verge

Many experts believe the third shot does more than just top-off waning immunity; the shot also broadens the ability of the immune system to defend against variants, including omicron.

Read more on Washington Post

Engineers deliberately left the fuel tank accessible for a top-off by visiting spacecraft, if and when such technology becomes available.

Read more on Seattle Times

They can be fully charged up in 2.5 hours, and in a low-battery pinch, a 15-minute top-off should get you three hours of listening time.

Read more on The Verge

The fund is filled with gas tax receipts and the occasional top-off from the government’s regular coffers.

Read more on Washington Post

Related Words

• achieve 
• break up 
• cease 
• close 
• complete 
• conclude 
• culminate 
• delay 
• drop 
• expire 
• finish 
• give up 
• halt 
• play out 
• quit 
• resolve 
• settle 
• stop 
• terminate 
• wind up