Choose a list
Grade Level
Test Prep
Most Common Words
How It Works
Vocabulary Genius predicts how well you know every word in the English language.
Choose a list, and Vocabulary Genius will teach you the "best" words first, which are the most common words that it thinks you don’t know yet.
Vocabulary Genius repeats words at just the right time, before you’re likely to forget them, in order to maximize retention.
Vocabulary Genius uses innovative algorithms based on the spaced repetition learning theory. It understands that you forget with time.
Tip: As you complete lessons in Class Ace, Vocabulary Genius updates its ‘knowledge model’ of what you know. It tracks your positive and negative interactions with each word. This all helps you learn more in less time.
Why Improve your Vocabulary?
Improving your vocabulary helps you: get better grades, improve your reading comprehension, understand more of the world, be more credible, get into better schools, get better jobs, earn more money, and be more convincing.
Vocabulary Facts
- The English language has over 1,000,000 total words.
- Only 170,000 of them are currently in use.
- Most adult native English speakers know 20,000-40,000 words.
- In all of his published works, Shakespear used 17,677 different words. He was credited with either inventing or being the first to write as many as 1,700 of them.
SAT Vocabulary
These must-know SAT vocabulary words often appear on SAT tests. Knowing these words can help improve your score.
After you review, complete the practice. It'll help you remember these words for longer.
abstract
existing in thought or as an idea but not having a physical or concrete existence.
"abstract concepts such as love or beauty"
synonyms
theoretical, conceptual, notional
amateur
a person who engages in a pursuit, especially a sport, on an unpaid rather than a professional basis.
"it takes five years for a top amateur to become a real Tour de France rider"
synonyms
non- professional, non- specialist, layman
domestic
relating to the running of a home or to family relations.
"domestic chores"
synonyms
family, home, private
query
a question, especially one expressing doubt or requesting information.
"if you have any queries please telephone our office"
synonyms
question, inquiry, interrogation