explain

verb

ex·​plain ik-ˈsplān 

explained; explaining; explains

transitive verb

1

a

: to make known

explain the secret of your success

b

: to make plain or understandable

footnotes that explain the terms

2

: to give the reason for or cause of

unable to explain his strange conduct

3

: to show the logical development or relationships of

explained the new theory

intransitive verb

: to make something plain or understandable

a report that suggests rather than explains

explainable

ik-ˈsplā-nə-bəl 

adjective

Phrases

explain oneself

: to clarify one's statements or the reasons for one's conduct

Synonyms

• clarify
• illustrate
• demonstrate
• simplify
• interpret

Choose the Right Synonym for explain

explain, expound, explicate, elucidate, interpret mean to make something clear or understandable.

explain implies a making plain or intelligible what is not immediately obvious or entirely known.

explain the rules

expound implies a careful often elaborate explanation.

expounding a scientific theory

explicate adds the idea of a developed or detailed analysis.

explicate a poem

elucidate stresses the throwing of light upon as by offering details or motives previously unclear or only implicit.

elucidate an obscure passage

interpret adds to explain the need for imagination or sympathy or special knowledge in dealing with something.

interpreting a work of art

Examples of explain in a Sentence

I need a lawyer to explain this contract to me.

The professor explained the poem to the class.

She explained how the machine worked.

I explained to them that I would be available by phone.

Scientists could not explain the strange lights in the sky.

I don't know how to explain the dog's strange behavior.

We asked him to explain his reasons to us.

Can you explain why no one was informed earlier?

That explains why we were so far behind schedule.

Give me a chance to explain.

Recent Examples on the Web

Brad Kirner, director of destination development at Cook Islands Tourism Corporation, explained in the email interview that with tourism making up around 70% of the Cook Islands’ GDP, the border closure due to COVID-19 essentially froze the economy overnight. —Emese MacZko, Forbes.com, 1 July 2025

Stevens explains that there are three things to consider when looking at sustainability in swim: materials and process innovation, communication and transparency, and giving back. —Alyssa Hardy, Vogue, 1 July 2025

Each explained their reasons for bucking the president. —Ivan Pereira, ABC News, 1 July 2025

This uptick helps explain why monthly sales of the pouches more than tripled between 2021 and 2024, even as usage in adults remains low—under 3% report ever popping one in, though that number is higher among folks who currently smoke (11%) or once did (7%). —Erica Sloan, SELF, 1 July 2025

Word History

Etymology

Middle English explanen, from Latin explanare, literally, to make level, from ex- + planus level, flat — more at floor

First Known Use

15th century, in the meaning defined at transitive sense 1b

Phrases Containing explain

• explain away
• hasten to add/say/explain (etc.)

Rhymes for explain

• abstain
• airplane
• alkane
• arcane
• arraign
• attain
• backplane
• betaine
• biplane
• blockchain
• butane
• campaign

Kids Definition

explain

verb

ex·​plain ik-ˈsplān 

1

: to make plain or understandable

2

: to give the reason for or cause of

explainable

-ˈsplā-nə-bəl 

adjective

explainer noun