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VocabTrainer™
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Build vocabulary with activities that adapts to each student
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A smart, award-winning adaptive engine
Vocabulary.com has crafted a smart, award-winning adaptive engine that helps
learners systematically improve their vocabulary.
We understand how students learn words
Learners have answered over 9 billion questions on Vocabulary.com and we use
this data to understand how each individual masters (and forgets) new words.
With millions of questions answered daily, our engine continually fine tunes
itself for anyone at any level.
Personalized learning
With each question a student answers, VocabTrainer™ evaluates their knowledge
on a 20-level scale and adjusts the student's learning plan to meet their
needs. We use each individual's vocabulary level and their past answers to
identify the unique gaps in their vocabulary knowledge. VocabTrainer then
systematically challenges them with questions selected just for that learner.
The right words
By comparing answers from all of Vocabulary.com's learners, VocabTrainer™
identifies trends and common gaps for different levels on our scale. We can
identify which words students are ready to learn and which words they are
likely to need help with at each level. VocabTrainer™ incorporates these words
into the student's daily vocabulary exercises.
The right questions
As students answer basic questions correctly and progress toward mastering a
word, VocabTrainer™ poses harder questions that stretch the student's knowledge.
With dozens of questions for each word, VocabTrainer™ is able to test nuance
and peripheral meanings in addition to a single definition. With ten different
types of questions—including questions based on images, synonyms, and real
world examples—students learn each word's multiple meanings and understand
them in context.
The right timing
Knowledge and recall can decline over time, so our adaptive engine also takes
into account the timing of learning a word. VocabTrainer™ tracks how long it
has been since a learner was asked about a word and automatically includes
brush-up questions. With this spaced repetition, support for long-term
retention is built into our model.
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Copyright © 2026
Vocabulary.com, Inc.
A division of IXL Learning •
All Rights Reserved.
Learn with us
Learner subscriptions
Vocabulary lists
Dictionary
Test Prep
Join a Vocabulary Jam
Commonly confused words
Word of the day
Teach with us
For educators
For schools and districts
How it works
Success stories
Research
Professional development
Contact sales
Resources
Help articles/FAQ
Teaching resources
Learner resources
ESL/ELL resources
Grade level resources
IPA Pronunciation
Contact support
Leaderboards
Vocabulary Bowl
Today's leaders
Weekly leaders
Monthly leaders
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Our Mission
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Tell us what you think
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Terms of Use
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Comprehensive K-12 personalized learning
Immersive learning for 25 languages
Trusted tutors ready to help in 300+ subjects
35,000 worksheets, games, and lesson plans
Marketplace for millions of educator-created resources
Fun educational games for kids
Spanish-English dictionary, translator, and learning
Diccionario inglés-español, traductor y sitio de aprendizaje
Fast and accurate language certification
French-English dictionary, translator, and learning
Copyright © 2026
Vocabulary.com, Inc.
A division of IXL Learning •
All Rights Reserved.