Quick Definition
Through means: (1) moving in one side and out of the other; (2) by means of; (3) finished or done; (4) going all the way from start to finish. It functions as a preposition, adverb, and predicate adjective.
What Does Through Mean?
Through is one of the most versatile words in English. At its core, the preposition describes movement that enters from one side and exits from the other: light shining through a window, walking through a forest. But the word has expanded far beyond physical movement.
It can describe duration: through the night, all through the summer. It can express the means by which something happens: learn through experience, succeed through hard work. As an adverb it intensifies a verb to indicate completeness: read it through, think it through. As an adjective it means finished: Are you through? It even describes transport routes: a through train, a through road.
Because through appears in so many phrasal verbs — go through, get through, see through, carry through — it is one of the most important words for intermediate and advanced learners to master.
Etymology: From Old English þurh, related to Old High German durh and Gothic þairh. The Proto-Germanic root *þurhw- connects to Sanskrit tiras (across, beyond). The modern -ough spelling reflects Middle English scribal conventions and has been part of core English vocabulary for over a thousand years. The same root appears in thorough (an older, extended form meaning completely through) and the archaic thro.
Example Sentences
| Sentence | Level & usage note |
|---|---|
| She walked through the park to get to school. | A2 — preposition of movement, physical space |
| We drove through the night to reach the hotel in time. | B1 — preposition of time, continuous period |
| She worked through every exercise in the workbook. | B1 — preposition expressing systematic completion |
| The project succeeded through careful planning and teamwork. | B2 — preposition expressing means or agency |
| The committee scrutinised the proposal thoroughly before carrying it through to the final vote. | C1 — phrasal verb, formal register, extended metaphor |
Collocations
| Collocation | Meaning | Example |
|---|---|---|
| go through | experience something difficult; or examine carefully | She went through a difficult year after the redundancy. |
| get through | succeed in finishing; or reach someone by phone | I finally got through to customer services after twenty minutes. |
| see through | perceive the truth behind something; or complete despite difficulty | He saw through her excuse immediately. |
| carry through | complete a plan or task successfully | The reforms were carried through despite opposition. |
| break through | force a way past an obstacle; achieve a major advance | Scientists may have broken through the barrier to a cure. |
| think through | consider something carefully before acting | Think the decision through before you resign. |
| fall through | fail to happen (of a plan or deal) | The property sale fell through at the last moment. |
| pull through | recover from illness or difficulty | The doctors were confident he would pull through. |
| through and through | completely; in every respect | She is a professional through and through. |
| halfway through | at the midpoint of something | He fell asleep halfway through the lecture. |
Usage Notes
- Through vs. across: Use through for enclosed spaces or substances you pass inside (through the tunnel, through thick fog). Use across for open surfaces you cross on top of (across the road, across the field).
- Through vs. throughout: Through can describe a period you pass along (through the winter). Throughout emphasises the entirety of that period, every moment included (throughout the winter = all winter long with no gaps).
- Through as adverb: After a verb, through emphasises total completion: read it through, sleep right through, think it through. This is distinct from the preposition use.
- Through vs. thru: Thru is an informal American spelling found on road signs and in casual digital writing. Never use it in formal British English writing.
- Through train / through road: In British English, through as a modifier means not requiring a change or not ending at a dead end: a through train to Edinburgh, no through road.
Common Mistakes
Watch Out For
She learned English by go through many mistakes. (incorrect verb form)
She learned English by going through many mistakes. (gerund after preposition by)
We drove across the tunnel to save time. (wrong preposition)
We drove through the tunnel to save time. (through for enclosed spaces)
The deal fall through because of the price. (wrong tense agreement)
The deal fell through because of the price. (phrasal verb, past tense)
I'm thru with this course. (informal spelling, not acceptable in formal writing)
I'm through with this course. (standard British English spelling)
Related Words
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Frequently Asked Questions about “through”
What does through mean?
Through has several closely related meanings. As a preposition it describes movement from one side to the other ('walk through a door'), passing across a time period ('through the night'), or the means by which something happens ('learn through practice'). As an adverb it means all the way or completely ('read it through'). As a predicate adjective it means finished ('Are you through?').
What is the difference between through and throughout?
Through indicates movement or passage — going from one side to the other or from one end to the other. Throughout means in every part of a place or during the whole of a time period: 'She travelled through France' (she passed from one side to the other) versus 'She worked throughout the night' (during the entire night without stopping). Throughout always emphasises completeness and totality.
How do you pronounce through?
Through is pronounced /θruː/ — it rhymes with 'blue', 'new', and 'true'. The -ough spelling is notoriously irregular in English: compare 'through' (/θruː/) with 'though' (/ðəʊ/), 'thought' (/θɔːt/), and 'thorough' (/ˈθʌr.ə/). Learners often mispronounce through as /θrəʊ/ by analogy with 'though' — remember it rhymes with 'do', not 'go'.
What is the difference between through and across?
Through implies movement inside something from one end to the other — there is something surrounding you as you pass ('through the tunnel', 'through the forest'). Across implies movement over a surface from one side to the other without going inside ('across the road', 'across the field'). Use through for enclosed spaces or substances; use across for open surfaces.
Can through be used as an adjective?
Yes, as a predicate adjective through means 'finished' or 'done': 'I am through with this project.' In British English this sounds slightly formal or literary; 'finished' and 'done' are more common in everyday speech. Through also appears in compound adjectives: a through train (one that does not require a change) and a through road (one that goes all the way through rather than ending in a cul-de-sac).
What are common collocations with through?
Common collocations include: go through (experience or examine), get through (finish or pass), look through (examine), come through (succeed), break through (force a way past), fall through (fail to happen), see through (perceive the truth of), work through (deal with systematically), and carry through (complete successfully). These phrasal verbs are extremely frequent in everyday English.
What is the difference between through and thru?
Thru is an informal spelling variant used mainly in American English, often on road signs ('thru traffic') and in informal digital communication. It is not accepted in formal writing in British English. Always use through in essays, academic work, and professional documents.
How do you use through as an adverb?
As an adverb, through follows a verb to mean completely or all the way: 'Please read the contract through before signing.' 'The arrow went straight through.' 'I slept right through until morning.' It can also indicate a phone connection: 'Can you put me through to the manager?' The adverbial use frequently combines with all: 'all through the summer'.
What is the origin of the word through?
Through comes from Old English 'þurh', related to Old High German 'durh' and Gothic 'þairh', all meaning 'through'. The Proto-Germanic root *þurhw- is connected to the Sanskrit 'tiras' (across, beyond). The word has been part of the core English vocabulary for over a thousand years, appearing in some of the earliest English texts. The confusing -ough spelling reflects Middle English scribal conventions.
How can I practise using through in English?
Phrasal verbs with through are some of the most useful in everyday English. Try LexFizz's Complete the Sentence exercise to practise through in context, and use the Flash Cards tool to memorise key collocations such as go through, get through, and break through. Focusing on real example sentences from authentic texts will help you absorb the natural patterns.