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Synchronise vs. Synchronize — What's the Difference?

By Tayyaba Rehman & Maham Liaqat — Updated on March 11, 2024
Synchronize and synchronise are different spellings of the same concept, with "synchronize" being the American English version and "synchronise" used in British English.
Synchronise vs. Synchronize — What's the Difference?

Difference Between Synchronise and Synchronize

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Key Differences

The terms synchronize and synchronise refer to the process of causing things to occur at the same time or rate, ensuring that actions or processes operate in unison. The primary difference between them lies in their usage across different varieties of English. In American English, "synchronize" is the preferred spelling, characterized by the use of "z" in place of "s" in many words, which is a common feature of American spelling practices. Conversely, "synchronise" follows the British English convention, which often favors the "s" over the "z" in such contexts, reflecting the spelling norms prevalent in the UK and many other countries where British English influences are strong.
Both spellings denote the act of aligning events, actions, or processes in time, ensuring they occur simultaneously or conform to a specific sequence or timing. This concept is widely applied in various fields, including technology, where devices or systems are synchronized to share data or perform tasks cohesively; in entertainment, particularly in film and music production, to align sounds and images; and in everyday scenarios, such as coordinating schedules among individuals or groups to facilitate meetings or events.
The spelling distinction does not affect the meaning or application of the term; instead, it reflects the broader linguistic phenomenon of American and British English diverging in certain spelling conventions. These variations are part of the rich tapestry of English language usage worldwide, with each form adhering to the norms and preferences of different English-speaking communities.
Despite the spelling differences, the pronunciation of synchronize and synchronise remains largely the same, and the choice between them is primarily a matter of consistency with the chosen variety of English. In contexts where a specific form of English is preferred or required, it is advisable to adhere to the corresponding spelling conventions to maintain linguistic consistency.
Understanding the equivalence of synchronize and synchronise in meaning, despite the variance in spelling, highlights the adaptability and diversity of English as a global language. It underscores the importance of context in choosing spelling variants, ensuring effective and appropriate communication across different cultural and linguistic landscapes.
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Comparison Chart

Spelling

Preferred in American English
Preferred in British English

Usage

Common in the United States
Common in the UK, Australia, and other regions

Meaning

To make things occur at the same time or rate
To make things occur at the same time or rate

Application

Technology, entertainment, coordination
Technology, entertainment, coordination

Pronunciation

Largely the same for both spellings
Largely the same for both spellings

Compare with Definitions

Synchronise

To align in time.
The project managers aim to synchronise project milestones with the launch date.

Synchronize

To match speeds.
Pilots synchronize the speed of aircraft during formation flying.

Synchronise

To coordinate actions.
It's crucial to synchronise marketing efforts across all departments.

Synchronize

To coordinate actions.
Software applications synchronize data to ensure consistency.

Synchronise

In technology.
Users can synchronise their email accounts with the mobile app.

Synchronize

In technology.
Synchronize your calendar across all your devices for better organization.

Synchronise

To match speeds.
The machines in the factory must be synchronised to maintain production efficiency.

Synchronize

To align in time.
The team worked to synchronize their watches before the operation.

Synchronise

In media production.
The editors will synchronise the voice-over with the animation sequences.

Synchronize

In media production.
The sound engineer will synchronize the soundtrack with the movie scenes.

Synchronise

Standard spelling of synchronize

Synchronize

Cause to occur or operate at the same time or rate
Soldiers used watches to synchronize movements

Synchronise

Happen at the same time

Synchronize

To cause to occur or operate with exact coincidence in time or rate
The military units synchronized their operations. We synchronized our watches.

Synchronise

Make (motion picture sound) exactly simultaneous with the action;
Synchronize this film

Synchronize

To cause to occur or operate at the same time as something else
They synchronized their trip with the annual tulip festival.

Synchronise

Arrange or represent events so that they co-occur;
Synchronize biblical events

Synchronize

To represent (events) as occurring at the same time or in the same time period.

Synchronise

Operate simultaneously;
The clocks synchronize

Synchronize

To arrange (a video or soundtrack, for example) to play or operate in synchronization with something else.

Synchronise

Cause to indicate the same time or rate;
Synchronize your watches

Synchronize

To transfer data between (two devices) to ensure that the same data is stored on both.

Synchronise

Make synchronous and adjust in time or manner;
Let's synchronize our efforts

Synchronize

To execute such a transfer to cause the content of (two or more files or other sets of data) to be identical.

Synchronize

To occur at the same time; be simultaneous
The light flashes of fireflies tend to synchronize with one another.

Synchronize

To operate in unison.

Synchronize

(transitive) To cause two or more events or actions to happen at exactly the same time or same rate, or in a time-coordinated way.

Synchronize

(intransitive) To occur at the same time or with coordinated timing.

Synchronize

(transitive) To cause (video and audio) to play in a coordinated way.

Synchronize

(transitive) To set (a clock or watch) to display the same time as another.
We synchronized our watches and agreed to meet at four o'clock precisely.

Synchronize

To cause (a set of files, data, or settings) on one computer or device to be (and try to remain) the same as on another.

Synchronize

To agree, be coordinated with, or complement well.

Synchronize

(transitive) To coordinate or combine.

Synchronize

To agree in time; to be simultaneous.
The path of this great empire, through its arch of progress, synchronized with that of Christianity.

Synchronize

To assign to the same date or period of time; as, to synchronize two events of Greek and Roman history.

Synchronize

To cause to agree in time; as, to synchronize the movements of different machines; to synchronize clocks.

Synchronize

Make synchronous and adjust in time or manner;
Let's synchronize our efforts

Synchronize

Happen at the same time

Synchronize

Make (motion picture sound) exactly simultaneous with the action;
Synchronize this film

Synchronize

Arrange or represent events so that they co-occur;
Synchronize biblical events

Synchronize

Operate simultaneously;
The clocks synchronize

Synchronize

Cause to indicate the same time or rate;
Synchronize your watches

Common Curiosities

Does the spelling difference affect pronunciation?

No, the pronunciation is largely the same for both spellings.

Are there other words with similar American and British spelling differences?

Yes, there are many words with similar variations, such as "organize" (American English) and "organise" (British English).

Is one spelling correct and the other wrong?

No, both spellings are correct within their respective varieties of English.

Why do these spelling differences exist?

Spelling differences arose from historical developments in the English language and were influenced by various lexicographers and language reformers in the 18th and 19th centuries.

Can the spelling difference impact understanding?

Generally, the context makes the meaning clear, so understanding is not significantly impacted by the spelling difference.

Is one form of English better than the other?

No, both forms are valid and serve the needs of their respective speakers. The choice between them depends on cultural, geographical, and personal preferences.

Will using one spelling over the other affect my writing's professionalism?

Professionalism is maintained by consistency and adherence to the preferred spelling conventions of the chosen variety of English.

Will using British spelling in America (or vice versa) lead to misunderstandings?

While it might not lead to misunderstandings, it could stand out as unconventional to readers accustomed to their local spelling norms.

Can I use either spelling in any context?

While both are understood, it's best to use the spelling that matches the convention of your audience or the standard of the English you are using.

Has the preference for one spelling over the other changed over time?

Yes, language and spelling preferences evolve, influenced by cultural exchanges, technology, and educational standards.

Are there tools to help me adhere to one spelling convention?

Yes, many word processors and writing tools offer settings to check spelling according to American or British English conventions.

Do all English-speaking countries follow the British spelling convention?

Many, but not all, English-speaking countries outside the United States tend towards British spelling conventions, though there are exceptions and variations.

How do I know which spelling to use in an international context?

In international contexts, consider the primary audience or the standard practices of the organization or publication for which you are writing.

Can I mix American and British spellings in my writing?

For clarity and consistency, it's best to stick to one form of spelling within a single document or piece of writing.

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Author Spotlight

Written by
Tayyaba Rehman
Tayyaba Rehman is a distinguished writer, currently serving as a primary contributor to askdifference.com. As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.
Co-written by
Maham Liaqat

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