“Climate strike” has been crowned Collins Dictionary’s word of 2019.

The phrase refers to a form of protest made famous by Swedish environmentalist Greta Thunberg, whose #FridaysForFuture movement prompted thousands of school children around the world to go on strike protesting the lack of action to combat climate change.

The phrase “climate strike” was first registered in November 2015 after the first event to be so named took place to coincide with the UN Climate Change Conference in Paris.

But thanks to Thunberg, it has since become a worldwide movement.

Helen Newstead, language content consultant at Collins, said the politically charged atmosphere of recent years was “clearly driving our language”.

Greta Thunberg inspires climate activists everywhere: In pictures Show all 12 1 /12 Greta Thunberg inspires climate activists everywhere: In pictures Greta Thunberg inspires climate activists everywhere: In pictures In the protest that started a movement, Greta skips school to sit outside of the Swedish parliament in Stockholm in order to raise awareness of climate change on 28 August 2018 Getty Greta Thunberg inspires climate activists everywhere: In pictures Greta speaks at the World Economic Forum in Davos on 25 January AFP/Getty Greta Thunberg inspires climate activists everywhere: In pictures Greta stages a protest at the World Economic Forum in Davos on 25 January Reuters Greta Thunberg inspires climate activists everywhere: In pictures Greta speaks at the House of Commons in London on 23 April PA Greta Thunberg inspires climate activists everywhere: In pictures Greta addresses to the occupation at Marble Arch in London on 21 April AFP/Getty Greta Thunberg inspires climate activists everywhere: In pictures Greta meets the pope on a visit to Rome Reuters Greta Thunberg inspires climate activists everywhere: In pictures Greta speaks at the senate in Rome on 18 April Reuters Greta Thunberg inspires climate activists everywhere: In pictures Greta addresses a debate of the EU Environment, Public Health and Food Safety committee at the European Parliament in Strasbourg on 16 April AFP/Getty Greta Thunberg inspires climate activists everywhere: In pictures Greta receives the Special Climate Protection Award at the German Film and Television awards in Berlin on 30 March AFP/Getty Greta Thunberg inspires climate activists everywhere: In pictures Greta attends a children's climate protest in Berlin on 29 March AFP/Getty Greta Thunberg inspires climate activists everywhere: In pictures Greta addresses a children's climate protest on 1 March in Hamburg Getty Greta Thunberg inspires climate activists everywhere: In pictures Greta attends a meeting for the Civil Society For rEUnaissance at the EU Charlemagne Building in Brussels on 21 February AFP/Getty

“‘Climate strikes’ can often divide opinion, but they have been inescapable this last year and have even driven a former word of the year,” Ms Newstead added in reference to “single-use”, which was named Collins’ word of 2018 thanks to its usage regarding disposable plastics like water bottles, which are often used once and thrown away.

In addition to unveiling its word of the year, Collins has also pointed to a range of key words that have emerged this year as reflecting our ”ever-evolving culture and the preoccupations of those who use it”.

These words include “bopo”, short for body positivity, and “non-binary” in reference to people who choose not to identify as male or female and prefer “they” pronouns as opposed to “he” or “she”.

The dictionary’s selection comes after singer Sam Smith said this year they identify as non-binary, following a host of other celebrities including actor and activist Rose McGowan and Queer Eye star Jonathan Van Ness.

Other words listed as significant by Collins include “influencer” and “cancelled”, which refers to the act of boycotting someone on social media following something controversial they said or did.

Additionally, Collins has unveiled a “Brexicon” list of terms relating specifically to Brexit, such as “Project Fear” and “milkshake”, which the dictionary defines as “to throw a milkshake or similar drink over a public figure in order to humiliate him or her”.

The addition of “milkshake” comes after both Nigel Farage and Tommy Robinson were subject to this form of humiliation.

“The dictionary has no opinion on Brexit,” said Ma Newstead, “other than to say it has been quite generous in its gifts to the English language, as well as I am sure inspiring the use of many old-fashioned expletives.