forbidden by law or statute.
contrary to or forbidden by official rules, regulations, etc.: The referee ruled that it was an illegal forward pass.
Informal: Disparaging and Offensive. illegal alien.
Click for a side-by-side comparison of meanings. Use the word comparison feature to learn the differences between similar and commonly confused words.
- il·le·gal·ly, adverb
- illegal , illicit (see synonym study at the current entry)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use illegal in a sentence
Record fires in the Pantanal region this summer are also linked to illegal land-clearing for agriculture, which doubled in the first half of the year, Federal University of Mato Grosso ecologist Leticia Couto Garcia told Unearthed.What wildfires in Brazil, Siberia, and the US West have in common | Lili Pike | September 17, 2020 | Vox
The foundation supplies them with legal support as well as technological equipment and training so they can use smartphones, drones, and satellites to monitor illegal loggers and miners, and take action to stop them.Want to fight climate change effectively? Here’s where to donate your money. | Sigal Samuel | September 17, 2020 | Vox
Right now in New York that’s illegal, but I think One Fair Wage has been pushing that fight, and I think maybe now, maybe the industry will be more open to something like that.Tom Colicchio Hopes (and Fears) COVID-19 Will Change the Restaurant Industry | Pallabi Munsi | September 16, 2020 | Ozy
He projects that reliable clonal stocks could increase yields by 30 to 50 percent, drastically reducing the pressure for illegal forest clearing.The Environmental Headache in Your Shampoo - Issue 90: Something Green | Anastasia Bendebury & Michael Shilo DeLay | September 16, 2020 | Nautilus
Despite the rise of streaming as the primary mode of music consumption globally, illegal music download sites have remained a major source for most users across Africa.An Africa-focused music download service raised $6 million from its IPO to help pay artists | Yomi Kazeem | September 16, 2020 | Quartz
Watching him now being accused of illegal operations will not see them shedding any tears.Annoying Airport Delays Might Prevent You From Becoming the Next AirAsia 8501 | Clive Irving | January 6, 2015 | THE DAILY BEAST
In March, police arrested a group of wealthy businessmen and government officials who were about to dine on illegal tiger meat.
But millions of rules result in perpetual error, and, as a terminal side effect, make leadership and accomplishment illegal.
Many more illegal migrants face labor trafficking in Europe as they flee the conflict regions of North Africa and the Middle East.ISIS, Boko Haram, and the Growing Role of Human Trafficking in 21st Century Terrorism | Louise I. Shelley | December 26, 2014 | THE DAILY BEAST
This would take time since, under current law, even scouting Cuban baseball players on the island is illegal.Is Major League Baseball Ready For Cuba’s Players? | Ben Jacobs | December 19, 2014 | THE DAILY BEAST
He accuses the latter of various illegal and crafty acts, among them sending contraband gold and jewels to Mexico.
These illegal combinations in America were obviously what caused the inconveniences of which the merchants complained.The Eve of the Revolution | Carl Becker
Yet all this was beside the main point, which was that the action of Congress, whether expedient or not, was illegal.The Eve of the Revolution | Carl Becker
Some of the members felt that Parliament had the right to tax the colonists and others felt that it was illegal for them to do so.Hallowed Heritage: The Life of Virginia | Dorothy M. Torpey
Poor Nora hung her head as she asked in a low voice if Jim really thought her father was engaged in illegal practices.The Floating Light of the Goodwin Sands | R.M. Ballantyne
British Dictionary definitions for illegal
forbidden by law; unlawful; illicit
unauthorized or prohibited by a code of official or accepted rules
a person who has entered or attempted to enter a country illegally
- illegally, adverb
- illegality, noun
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