We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is a Morpheme?

By A. B. Kelsey
Updated May 23, 2024
Our promise to you
Language & Humanities is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At Language & Humanities, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

According to the guidelines of morphology, the linguistics branch concerned with the internal structure of words, a morpheme is the very smallest meaningful linguistic unit in the grammar of a language. In writing, they are composed of graphemes, or the smallest units of typography. In oral language, however, they are composed of phonemes, or the smallest units of speech. People categorize them according to how they work together and the functions they have, and they usually are combined according to a specific hierarchical structure. Studying them is important because it might show how to speed up learning a language or serve as tool for tracking language shifts.

Application of Definition

The current definition for these elements means that, in terms of length and function, they can be either a word or just an element of a word. For example, the word “technique” is both a word and a morpheme, because it cannot be broken down into any smaller meaningful units. A more complex example is the word “unkindly,” which consists of three parts: “un,” which means not, “kind,” which means benevolent, and “ly,” which means like. None of these can be broken up into smaller parts without losing all semantic meaning.

Many people believe that morphemes are the same as syllables, but this is incorrect. The word “cheddar,” for example, has two syllables, "ched" and "dar." These syllables can't be broken apart, because they have no semantic meaning on their own, so there is only one morpheme.

Some people assert that some larger terms and phrases technically could be classed as morphemes. A good example of this is the common idiom "the last straw," where the idea of having reached a limit isn't conveyed unless all three words appear together. Collocations such as "iron will" are additional instances where getting meaning requires using more than one word.


Linguists usually classify morphemes into two main groups based on how they combine to create a word. A "free" or "unbound" morpheme is a linguistic unit that is able to stand alone as a word without anything else attached to it. The word “cat” is a good example.

"Bound" morphemes, on the other hand, are sounds or a combination of sounds that must be bound to a free morpheme in order to create a word. Most prefixes and suffixes are this type. The letter “s” in the word “dogs,” for instance, is bound, because it does not have any semantic meaning without the free part, “dog.” This group is often further broken down into inflectional units, which modify tense or number and show grammatical relationships without changing meaning, and derivational units, which form new words when put together with a root, and which change parts of speech, meaning or both.

In the English language, people also label morphemes as roots, stems, or affixes. A root, sometimes called a base, gives meaning and is the unit to which others attach. As an example, "teach" is a root that can help form words like "teacher." An affix is a morpheme that attaches to either end of a root — prefixes attach at the beginning, while suffixes go on at the end. A stem is the root of a word combined with any affixes.

Structure and Hierarchy

In addition to studying how these units function and what they mean, linguists also look at how they go together, or how they're structured. They assert that, in general, there is a particular order of arrangement, which sometimes is described as being hierarchical. Basically, people usually try to put them together in a way that provides the most sense in terms of meaning as quickly as possible, which often means adding affixes last. When making the word "unspeakable," for example, a person would start by combining "speak" and "able," not "un" and "speak."

Reason for Study

People study morphemes because, according to linguists, they are the heart of communication. The way people use them, either alone or in combination, drastically affects the information that is passed from one person to another. Linguists are not quite sure how people learn to combine them properly according to the rules of particular languages, and they don't know exactly how individuals come to associate specific meanings with exact morphemes, but they hope that looking closely at these elements will provide some clues about language acquisition. This information could be very useful in helping people learn languages faster. It also could help analyze language development as it happens over time.

Language & Humanities is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.

Discussion Comments

By crazyadam — On Aug 06, 2011

So what is the difference between the root and a stem? I'm not clear. It seems that root and free morpheme are one and the same, and stem and bound morpheme are one and the same. Is that correct?

By goldenmist — On Apr 22, 2011

@Engelbert - A lexical morpheme is similar to what is described in the article as a free or unbound morpheme. It's a word or part of a word that can be understood fully by itself, like the example "cat". In terms of lexical and grammatical morphemes though, we are talking about their position in a sentence, and that’s where grammatical morphemes come in.

A grammatical morpheme is a morpheme that can only be fully understood by the contents of the sentence. Think "of", "and", "but", etc. This also includes suffixes and prefixes, like "pre-" or "-ness". This is similar to what is described as bound morphemes in the article as it changes the meaning of the "content" word, ie. the lexical morpheme.

Kind of tricky to wrap your head around, I know!

By Engelbert — On Apr 19, 2011

What is the difference between a lexical morpheme and a grammatical morpheme?

Language & Humanities, in your inbox

Our latest articles, guides, and more, delivered daily.

Language & Humanities, in your inbox

Our latest articles, guides, and more, delivered daily.