A1 noun Neutral #1,131 most common

moon

/muːn/

The large round object that circles the Earth and shines at night. It reflects light from the sun and appears in different shapes throughout the month.

Examples

3 of 5
1

Look at the moon in the sky tonight.

Look at the moon in the sky tonight.

2

The moon is the only natural satellite of the Earth.

The moon is the only natural satellite of the Earth.

3

The moon is so bright, I don't need a flashlight.

The moon is so bright, I don't need a flashlight.

Word Family

Noun
moon
Verb
moon
Adjective
lunar
Related
moonlight
💡

Memory Tip

The two 'o's in the word 'moon' look like two full moons or two eyes looking at the night sky.

Quick Quiz

The ___ is very bright and round tonight.

Correct!

The correct answer is: moon

Examples

1

Look at the moon in the sky tonight.

everyday

Look at the moon in the sky tonight.

2

The moon is the only natural satellite of the Earth.

formal

The moon is the only natural satellite of the Earth.

3

The moon is so bright, I don't need a flashlight.

informal

The moon is so bright, I don't need a flashlight.

4

Scientific research shows that the moon affects the ocean tides.

academic

Scientific research shows that the moon affects the ocean tides.

5

The company will launch the lunar mission next month.

business

The company will launch the lunar mission next month.

Word Family

Noun
moon
Verb
moon
Adjective
lunar
Related
moonlight

Common Collocations

full moon a moon that looks like a complete circle
new moon the phase when the moon is not visible
bright moon a moon that gives a lot of light
moonlight the light that comes from the moon
half moon the moon when only half of it is visible

Common Phrases

once in a blue moon

very rarely

over the moon

extremely happy

reach for the moon

to try to achieve something very difficult

Often Confused With

moon vs month

A month is a period of time (about 30 days), while the moon is the physical object in the sky.

moon vs sun

The sun is seen during the day and provides heat, whereas the moon is primarily seen at night.

📝

Usage Notes

We usually use 'the' before moon because there is only one moon belonging to the Earth. However, when talking about other planets, we can say 'Jupiter has many moons.'

⚠️

Common Mistakes

Learners often forget to use 'the' (e.g., saying 'Moon is beautiful' instead of 'The moon is beautiful').

💡

Memory Tip

The two 'o's in the word 'moon' look like two full moons or two eyes looking at the night sky.

📖

Word Origin

Derived from the Old English word 'mōna', which is related to words meaning 'to measure', because the moon was used to measure time (months).

Grammar Patterns

Used with the definite article 'the' Countable noun: moon (singular), moons (plural) Can be used as a compound noun (e.g., moonlight)
🌍

Cultural Context

The moon is a symbol of beauty and romance in many cultures and is the basis for several traditional calendars and festivals.

Quick Quiz

The ___ is very bright and round tonight.

Correct!

The correct answer is: moon

More Weather words

windy

A1

Windy is an adjective used to describe weather conditions where there is a lot of strong, moving air. It characterizes a day or a place where the wind is blowing harder than usual, often making it feel colder or causing objects to move.

foggy

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Foggy is an adjective used to describe weather where there is a thick cloud of tiny water droplets near the ground. It makes it very difficult to see things that are far away or even close by.

stormy

A1

Describes weather that is characterized by strong winds, heavy rain, and often thunder or lightning. It can also refer to a situation or relationship marked by strong conflict or angry arguments.

overcast

A1

An overcast is a condition where the entire sky is covered with clouds and no sun can be seen. It describes a grey and dull sky that often happens before rain or during cold days.

cool

A1

Describes a temperature that is moderately cold, typically in a way that is pleasant or refreshing. It is used to describe weather that is neither hot nor very cold, often requiring a light jacket.

freezing

A1

Freezing refers to the temperature at which water turns into ice, which is 0°C or 32°F. It describes the process or the state of the weather when it is cold enough for liquid to become solid.

humid

A1

Humid describes air that feels wet, damp, and sticky because it contains a lot of water vapor. It is often used to describe hot weather that makes you feel sweaty.

wet

A1

Describes something that is covered in or full of water or another liquid. In the context of weather, it refers to a day or period when it is raining.

mild

A1

Mild describes weather that is warmer than usual for a specific time of year, especially in winter or autumn. It means the temperature is moderate and pleasant, rather than being very cold or freezing.

rain

A1

Rain is water that falls from clouds in the sky in small drops. It is a natural weather event that provides water for plants and fills rivers and lakes.

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