Prefix, Suffix & Root Words vs RootWords

Master Root Words, Prefixes & Suffixes — Build a Bigger Vocabulary Fast Unlock the building blocks of the English language. Prefix, Suffix & Root Words is the all-in-one vocabulary builder that teaches you Latin root words, Greek root words, prefixes, and suffixes — each with clear meanings, origins, and real-word examples. Learn how words are built, decode words you've never seen before, and prepare for the SAT, GRE, ACT, TOEFL, and other exams with confidence. A root word is the most basic form of a word that can't be divided into smaller meaningful parts. By adding a prefix (at the beginning) or a suffix (at the end), you create whole new words. Learn the roots once, and you'll understand thousands of English words instantly. 486+ Latin & Greek Roots Browse a complete, searchable dictionary of root words with meanings, language of origin, and example words — filter by letter or search instantly. Prefixes, Suffixes & Root Lists Dedicated, searchable lists of common prefixes and suffixes with definitions and examples — everything in one place. Flashcards Study Mode Flip through roots, swipe to mark what you know, and track your mastery over time with a daily study streak. Vocabulary Quiz Test yourself with mixed multiple-choice questions and review your quiz history to see your progress. Themed Collections Explore roots grouped by topic — Numbers, Body & Health, Time, Movement, Light & Color, and more. Word of the Day Learn a new root every day and build a lasting study habit. Learn the Theory Easy-to-read guides: What is a root word? Root words vs. base words, affixes explained, Greek vs. Latin roots, how to decode unfamiliar words, using roots on tests, and where English words come from. Why you'll love it • Perfect for students, teachers, ESL learners, writers, and word lovers • Great prep for SAT, GRE, ACT, TOEFL, IELTS & spelling tests • Fast search and clean, distraction-free design • Light & dark mode • Works fully offline — no account needed Start learning the roots of English today and watch your vocabulary grow.

RootWords is a fast word game based on root words. Choose a root, spin as many words as you can and show you know their meaning. Don’t know the word? Tap the parts, they each have meaning and will help you learn the word. The more you play, the fewer times you will need to tap the parts. Good for SSAT, PSAT, SAT, ACT, LSAT, MCAT, IELTS tests and ELL in general. RootWords is good for all learners really. Your score will soar! Improve your vocabulary, your reading skills, your job prospects!