"Climate strike" (and yes it is actually two words!) has been named the Word of the Year for 2019.
It's been given the status by the Collins Dictionary.
Each year lexicographers - the people who put the dictionary together - examine the millions of words that have been used by people in things such as newspapers and social media posts. They then put together a list of 10 new key terms.
2019 is the second year in a row that an environmental word has been chosen.
"Climate strike" came out on top this year, after it was used on average 100 times more this year than in 2018.
The term refers to a protest which calls for action on climate change.
The term "non-binary" also made the shortlist. It refers to people who don't identify as either male or female.
Non-binary people may choose to use the pronouns "they" and "them" instead of "he" or "she". Singer Sam Smith came out as non-binary earlier this year.
Other words on the list include:
Bopo: A movement - all about body positivity - which encourages people to be proud of the way their bodies look.
Cancel: To publicly stop paying attention to a person or company, especially on social media, to show disapproval of their activities or opinions.
Deepfake: A technique which involves one digital image or video being superimposed onto another, which maintains the appearance of an unedited image or video.
Influencer: A person who uses social media to promote lifestyle choices, commercial products, etc to their followers.
Rewilding: This means returning areas of land to a wild state, including the reintroduction of animal species that are no longer naturally found there.
Yep, there's no getting away from it! This year, the Collins Dictionary team has also put together the Brexicon.
Brexiety - anxiety triggered by concerns about Britain's withdrawal from the European Union.
Flextension - an informal agreement to extend the time allowed for payment of a debt or completion of a contract, setting a new date that can be altered depending on future events.