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top-off

[ top-awf, -of ]
/ ˈtɒpˌɔf, -ˌɒf /
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noun Australian Slang.
a person who informs on another, often as if by accident or as a joke.
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Origin of top-off

First recorded in 1940–45; noun use of verb phrase top off to inform (on someone)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use top-off in a sentence

British Dictionary definitions for top-off

top off

verb
(tr, adverb) to finish or complete, esp with some decisive actionhe topped off the affair by committing suicide
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Idioms and Phrases with top-off

top off

1

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]

2

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

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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