Vocabulary Study Guide for the HESI Exam

General Information

In healthcare, effective communication is more than just a courtesy—it’s often a matter of life and death. As such, having a comprehensive vocabulary plays a critical role in a nurse’s daily operations. Nurses with an expansive vocabulary can articulate nuanced instructions, describe patient conditions with greater specificity, and foster a more empathetic rapport with patients. In dynamic, fast-paced environments like operating rooms or patient wards, this ability to communicate efficiently and effectively is especially crucial.

On the HESI exam, test-takers are assessed not only on their grasp of medical terminology but also on their understanding and usage of general vocabulary. This evaluation aims to ensure that future nurses can navigate both the technical and interpersonal aspects of their roles successfully. You will have 50 minutes to answer 50 questions.

It’s important to remember that the Vocabulary section of the HESI exam focuses on key concepts and terminologies that are essential in a healthcare setting. For medical vocabulary, expect to be tested on common prefixes, roots, and suffixes that form the backbone of medical terminology. Understanding these can enable you to decipher unfamiliar words and communicate effectively within the medical field.

A general vocabulary section is included in this study guide to help you round out your word recognition skills. These might include words often used in written materials, such as patient information leaflets, or verbal communication with patients and other healthcare professionals.

In preparing for the HESI exam, remember that your goal isn’t to learn every word that exists, but rather to develop a strong working vocabulary that will support you in your nursing career. This involves continuous learning—reading widely, practicing usage, and making a conscious effort to incorporate new words into your everyday language. With diligent preparation and the right resources, you can build a strong foundation for the Vocabulary section of the HESI exam and beyond.

General Vocabulary Concepts

Vocabulary is a word used to describe one’s verbal arsenal. Your vocabulary reflects significantly upon your breadth of knowledge, as it reveals how much exposure you have had to advanced concepts, not merely in the medical field, but in all academia, and even in day-to-day life. Someone with a well-rounded vocabulary is capable of retaining language needed to function on a coherent level with other adults and of engaging in more “high-level” discussions, such as one about current events or academic concepts.

The greatest asset in developing a solid vocabulary is the ability to read thoroughly and efficiently. While a portion of your vocabulary can be developed through speaking and practice, reading exposes you to words you might not encounter any other way, and it reveals methods of speaking you might not have considered outside of your social circle. To develop a well-rounded vocabulary, place your primary focus on reading items of all kinds, ranging from magazine articles to academic journals to novels. Exposure is key to nurturing an expansive vocabulary.

To assist in your development, three basic vocabulary concepts are identified: prefixes, suffixes, and root words.

Prefixes in General Use

A prefix is an add-on placed ahead of a word to change or enhance its meaning. Pre is an example of a prefix used to denote “before.” Post is another prefix and is used to denote “after.” The following is a list of the most common prefixes and their meanings.

Suffixes in General Use

Suffixes are the opposite of prefixes; they come after a word, though they are still used to change or further explain a root word. Suffixes can be more difficult to identify than prefixes, but as you read, you will find that you are familiar with most of the common suffixes used in the English language today. The most frequently used suffixes denote the passage of time.

Here is a list of the most common suffixes:

Roots

Roots (or “base words”) are words that contain the idea or thought being prevailed upon by prefixes and suffixes. In the word beautiful, for instance, the root of the word is beauty, while the suffix is ful.

Roots can be difficult to identify because they may require alteration to function with a prefix or suffix, as in the case of beautiful. For this reason, it is pivotal to familiarize yourself with common prefixes and suffixes; once you are familiar with the most common ones, you can more readily discover the root of words bearing additions. A few examples are given here: