April 22 – Earth Idiom Day

April 22nd has been recognized as Earth Day ever since 1970, the same year that the Environmental Protection Agency (EPA) was established. On a day where many people are focused on preserving green space and maintaining clean drinking water, we will look at the relationship between the Big Blue Marble and our language.

Earth Day Flag.pngLet’s begin by looking at some ‘roots.’

The Latin root for earth is terra, as in terra firma = “firm ground.” It’s the root found in words like subterranean, terrestrial, extraterrestrial, and terrarium.

The Greek root for earth is geo, as in geography, geology, and geopolitics.

On Earth Day, each of us becomes an Antaeus. Do you remember him from Greek mythology? He was the son of Gaia (Mother Earth) and Poseidon (god of the sea). Antaeus was an undefeated wrestler until he met up with Hercules, who was able to figure out his weakness. Even Hercules had trouble defeating the great wrestler until he lifted Antaeus’ legs from the earth. When he did this, Antaeus became powerless. As a result, Antaeus is a powerful metaphor for those who realize that their strength and very survival depends on Mother Earth.

Our daily conversations are well ‘grounded’ in earth metaphors. A number of idioms (expressions of two or more words that mean something different from the literal meaning of the individual words) use the earth as a metaphor. Below are a few examples using the words “earth” and “ground” from The American Heritage Dictionary of Idioms (1).


down to earth, four corners of the earth, move heaven and earth, not have an earthly chance, salt of the earth, heaven on earth, hell on earth, ends of the earth, wipe off the face of the earth


both feet on the ground, break ground, common ground, ear to the ground, from the ground up, gain ground, hit the ground running, happy hunting ground, run into the ground, stand one’s ground, worship the ground, someone walks on

Today’s Challenge: Clear as Mud

What are some examples of English idioms containing the words mud, grass, dust, dirt, trees, or water? Celebrate Earth Day by mining the language for expressions (idioms) containing the words listed below. Try to come up with as many as you can for each word:

mud, grass, dust, dirt, trees, water

Brainstorm a number of Earth-related idioms.  Identify three idioms that you think would be particularly curious for someone for whom English is a second language.  Write your three idioms, along with explanations of their meaning. Also, give an example sentence of each, showing how it might be used by a native English speaker. (Common Core Language 4 – Knowledge of Language)

Quotation of the Day:  Imperious Caesar. dead and turn’d to clay, Might stop a hole to keep the wind away: O, that that earth, which kept the world in awe, Should patch a wall to expel the winter’s flaw! –William Shakespeare in Hamlet: Act V, Scene 1

1 – Ammer, Christine. The American Heritage Dictionary of Idioms. Boston: Houghton Mifflin Company, 1997.

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