soil

soil — noun

1. the loose, dark substance on the ground that provides a place for plants to grow

1.nounA2
Definition

the loose, dark substance on the ground that provides a place for plants to grow and obtain nutrients; it is made up of small pieces of rock, dead plant matter, and tiny living organisms.

Example

Manuela mixed compost into the soil before planting tomatoes in early April.

collocation: mix compost into the soil

The soil in the coastal region is very sandy and drains water extremely quickly.

collocation: sandy soil

Common collocations
  • rich soil
  • fertile soil
  • sandy soil
  • clay soil
  • garden soil
  • potting soil
  • cultivate the soil
  • till the soil
Synonyms
  • earth

    more general term that also refers to the whole planet

  • dirt

    less formal; can mean unclean matter rather than growing medium

  • ground

    refers to the surface itself rather than the material

  • loam

    a specific high-quality soil with balanced sand, silt, and clay

Grammar Patterns

soil (uncountable)

a/an ___ soil (when describing type)

Usage Note

Uncountable in general use ('the soil is dry'), but countable when referring to a specific variety ('a sandy soil', 'loamy soils').

Common Mistakes

I bought some soils for my garden.
I bought some soil for my garden.
When referring to earth for growing plants, 'soil' is uncountable.
The dirt in this pot is very rich.
The soil in this pot is very rich.
'Dirt' means unclean matter, while 'soil' is the natural growing medium.

2. a nation's territory, especially when it relates to people's identity, loyalty,

2.nounB2
Definition

a nation's territory, especially when it relates to people's identity, loyalty, or sense of where they come from.

Example

After teaching in Germany for two decades, Yara returned to her native soil in Kenya.

collocation: native soil

The new agreement bans all testing of nuclear weapons on Australian soil.

Common collocations
  • native soil
  • foreign soil
  • home soil
  • on British soil
  • on Canadian soil
Synonyms
  • land

    more general, less emotional weight

  • territory

    more political and legal in tone

  • homeland

    emphasises personal attachment and origin

Grammar Patterns

possessive + soil

on/into + adjective + soil

Usage Note

Found chiefly in formal or literary contexts. Typically appears with a possessive adjective ('his native soil') or an adjective preceding it ('foreign soil', 'home soil'). Rarely used as a simple countable noun.

Common Mistakes

Canada is a beautiful soil.
Canada is a beautiful country.
'Soil' in this sense cannot stand alone as a simple countable noun for a nation.

3. the occupation or way of life of a farmer; agricultural work seen as a tradition

3.nounB2
Definition

the occupation or way of life of a farmer; agricultural work seen as a traditional or meaningful activity.

Example

Theo's grandfather, a man of the soil, worked the same land for fifty years.

idiom: a man of the soil

The Tanaka family lived by the soil for centuries, growing rice in the mountain valley.

collocation: live by the soil

Common collocations
  • man of the soil
  • work the soil
  • live by the soil
  • return to the soil
Synonyms
  • farming

    more direct and practical; refers to the activity itself

  • agriculture

    formal, industry-focused term

Grammar Patterns

the soil (as a way of life)

man/woman of the soil

work the soil

Usage Note

Restricted to fixed expressions such as 'a man/woman of the soil' (a farmer), 'work the soil' (work as a farmer), or 'live by the soil' (earn a living from farming). Sounds literary or old-fashioned in modern English.

Common Mistakes

He works in soil.
He works the soil.
The correct phrasing requires the definite article and no preposition after 'work'.

soil — verb

Word family

  • soiled
    adjectiveB2
  • soilless
    adjectiveC1
  • subsoil
    nounC1

Synonym discussion

Sense: noun/1

Soil, earth, dirt, ground, and loam all relate to the material covering the land, but they differ in scope and formality. Soil is the most specific term for the natural medium plants grow in, and it is the standard word in gardening and agriculture. Earth is broader — it can mean the entire planet, but as a surface material it is used in literary or poetic contexts ('a mound of earth'). Dirt is the everyday, informal word for earth when it is loose and not attached to plants — but it also means 'unclean matter,' so in gardening contexts soil is preferred for precision. Ground refers to the solid surface we walk on rather than the material itself ('the ground is frozen'). Loam is a technical term for a specific balanced mixture of sand, silt, and clay that gardeners consider ideal. If you are planting flowers, use soil or potting soil; if you are describing something unscientific, dirt or ground may feel more natural.

earth ↗dirt ↗ground ↗loam

Common collocations

Nouns

  • soil sample
  • soil quality
  • soil conservation
  • soil erosion
  • soil type

Adverbs

  • easily soiled
  • quickly soiled

Phrases

  • top layer of soil
  • type of soil
  • soil and water

Prepositions

  • soil in
  • soil from

Etymology

LatinFrenchEnglish

The noun 'soil' (ground, earth) comes from Anglo-French 'soil', from Latin 'solium' (seat, throne), influenced by Latin 'solum' (ground, floor). The verb 'soil' (to make dirty) comes from Old French 'soillier' (to make dirty or muddy). Although both words entered English around the same time, they are thought to come from different roots in Latin — the noun from 'solum' meaning ground, and the verb from a Germanic or Latin source meaning pig's wallow or mud.