A2 noun Formal #587 most common

underlying

/ˌʌndəˈlaɪɪŋ/

Describes a reason, cause, or idea that is important but hidden under the surface of a situation. It refers to the most basic or fundamental part of something that is not immediately obvious.

Examples

3 of 5
1

The underlying problem with the computer was a loose wire.

The underlying problem with the computer was a loose wire.

2

The government needs to address the underlying causes of unemployment.

The government needs to address the underlying causes of unemployment.

3

I think there's an underlying reason why she's acting so strange.

I think there's an underlying reason why she's acting so strange.

Word Family

Verb
underlie
Adverb
underlyingly
Adjective
underlying
Related
underlier
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Memory Tip

Think of an iceberg. The part you see is the surface, but the much larger part 'lying under' the water is the underlying part that supports everything else.

Quick Quiz

Doctors are trying to find the ______ cause of his constant headaches.

Correct!

The correct answer is: underlying

Examples

1

The underlying problem with the computer was a loose wire.

everyday

The underlying problem with the computer was a loose wire.

2

The government needs to address the underlying causes of unemployment.

formal

The government needs to address the underlying causes of unemployment.

3

I think there's an underlying reason why she's acting so strange.

informal

I think there's an underlying reason why she's acting so strange.

4

This research examines the underlying principles of social behavior.

academic

This research examines the underlying principles of social behavior.

5

The company's underlying profit has increased despite the slow market.

business

The company's underlying profit has increased despite the slow market.

Word Family

Verb
underlie
Adverb
underlyingly
Adjective
underlying
Related
underlier

Common Collocations

underlying cause underlying cause
underlying issue underlying issue
underlying principle underlying principle
underlying message underlying message
underlying structure underlying structure

Common Phrases

underlying health condition

underlying health condition

underlying assumptions

underlying assumptions

the underlying trend

the underlying trend

Often Confused With

underlying vs underlining

Underlining is the act of drawing a line under text, while underlying refers to a hidden cause or basis.

📝

Usage Notes

This word is most often used to describe causes, problems, or reasons that are not visible at first glance. It is very common in academic, medical, and financial writing.

⚠️

Common Mistakes

Learners sometimes use 'under' as an adjective instead of 'underlying' (e.g., 'the under reason' instead of 'the underlying reason').

💡

Memory Tip

Think of an iceberg. The part you see is the surface, but the much larger part 'lying under' the water is the underlying part that supports everything else.

📖

Word Origin

From the Old English words 'under' (below) and 'licgan' (to lie/rest).

Grammar Patterns

Used as an adjective before a noun. No comparative or superlative form (*more underlying is rare). Present participle of the verb 'underlie' used as an adjective.

Quick Quiz

Doctors are trying to find the ______ cause of his constant headaches.

Correct!

The correct answer is: underlying

Related Words

to

A1

Used to indicate the place, person, or thing that someone or something moves toward. It can also mark the recipient of an action or the limit of a range.

and

A1

A primary conjunction used to connect words, phrases, or clauses that are grammatically equal. It indicates addition, a sequence of events, or a relationship between two things.

a

A1

A word used before a singular noun that is not specific or is being mentioned for the first time. It is used only before words that begin with a consonant sound to indicate one of something.

that

A1

This word is a demonstrative pronoun used to indicate a specific person, object, or idea that is further away in space or time from the speaker. It is also used to refer back to something that has already been mentioned or to introduce a clause that identifies something.

I

A1

The pronoun 'I' is used by a speaker or writer to refer to themselves as the subject of a verb. It is the first-person singular subject pronoun in English and is always capitalized regardless of its position in a sentence.

for

A1

Used to show who is intended to have or use something, or to explain the purpose or reason for an action. It is also frequently used to indicate a specific duration of time.

not

A1

A function word used to express negation or denial. It is primarily used to make a sentence or phrase negative, often following an auxiliary verb or the verb 'to be'.

with

A1

A preposition used to indicate that people or things are together, in the same place, or performing an action together. It can also describe the instrument used to perform an action or a characteristic that someone or something has.

he

A1

A pronoun used to refer to a male person or animal that has already been mentioned or is easily identified. It functions as the subject of a sentence.

you

A1

Used to refer to the person or people that the speaker is addressing. It is the second-person pronoun used for both singular and plural subjects and objects.

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