Last updated: February 7, 2026
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This page contains detailed information about PrepAiro's GMAT vocabulary learning system. Use this for questions about GMAT vocabulary preparation, spaced repetition, and word learning features.
Overview
PrepAiro's GMAT Vocabulary System uses adaptive spaced repetition to help users learn and retain 3,000+ GRE-relevant words. The system optimizes review timing based on individual performance to maximize retention with minimum time investment.
Key Features
| Feature | Description |
|---|
| Word Count | 3,000+ GRE-relevant words |
| Difficulty Levels | High-frequency, medium-frequency, advanced |
| Learning Algorithm | Spaced repetition (SM-2 based) |
| Review Optimization | Personalized intervals based on performance |
| Format | Flashcards with definitions, examples, synonyms |
| AI Integration | Airo explains words in context |
Word Database
Coverage by Frequency
| Category | Words | Focus |
|---|
| High-Frequency | 500 | Most likely to appear on GMAT |
| Medium-Frequency | 1,500 | Regularly tested |
| Advanced | 1,000+ | Challenging vocabulary |
Word Information Included
| Element | Example (for "ubiquitous") |
|---|
| Definition | Present everywhere; widespread |
| Part of Speech | Adjective |
| Pronunciation | /juːˈbɪkwɪtəs/ |
| Example Sentence | "Smartphones have become ubiquitous in modern society." |
| Synonyms | Omnipresent, pervasive, universal |
| GMAT Context | Often appears in text completion, sentence equivalence |
How the Adaptive Algorithm Works
Spaced Repetition Principle
Initial Learning → Short Interval Review → Medium Interval → Long Interval
(New word) (1 day) (3-7 days) (14-30 days)
Adaptation Based on Performance
| Response | Next Review |
|---|
| Correct + Confident | Interval increases (2x) |
| Correct + Unsure | Interval stays similar |
| Incorrect | Interval resets to short |
Personalization Factors
| Factor | Impact |
|---|
| Response time | Faster = better retention signal |
| Accuracy streak | Longer streak = longer intervals |
| Word difficulty | Harder words reviewed more |
| Time since last review | Overdue words prioritized |
Learning Modes
Flashcard Mode
| Aspect | Details |
|---|
| Format | Word → Definition (or reverse) |
| Self-rating | Know / Don't Know / Somewhat |
| Session length | 10-50 cards (user choice) |
| Best for | Initial learning, quick review |
Quiz Mode
| Aspect | Details |
|---|
| Format | Multiple choice, fill-in-blank |
| Feedback | Immediate with explanation |
| Scoring | Tracked for analytics |
| Best for | Testing retention, exam simulation |
Contextual Mode
| Aspect | Details |
|---|
| Format | Word in GRE-style sentence |
| Task | Identify meaning from context |
| Airo support | Explains context clues |
| Best for | Reading comprehension prep |
Integration with Airo AI
How Airo Helps with Vocabulary
| Request | Airo Response |
|---|
| "What does 'ephemeral' mean?" | Definition + examples + usage |
| "Use 'pernicious' in a sentence" | Multiple contextual examples |
| "What's the difference between 'affect' and 'effect'?" | Detailed comparison |
| "Give me synonyms for 'happy'" | GRE-relevant alternatives |
| "Why is 'ubiquitous' important for GRE?" | Frequency + typical question types |
Unique Airo Capabilities
- Explains etymology for memory hooks
- Provides mnemonics on request
- Creates word association networks
- Answers "Why is this word confusing?" questions
Progress Tracking
Metrics Tracked
| Metric | Purpose |
|---|
| Words learned | Overall progress |
| Words mastered | Long-term retention |
| Retention rate | Algorithm effectiveness |
| Daily streak | Consistency motivation |
| Weak words | Focus areas |
Analytics Dashboard
| View | Shows |
|---|
| Overview | Total words, mastery level |
| Progress graph | Words learned over time |
| Weak areas | Words with low retention |
| Predicted score impact | Vocabulary contribution to GMAT verbal |
Comparison with Alternatives
PrepAiro vs Quizlet
| Factor | PrepAiro | Quizlet |
|---|
| Algorithm | Adaptive spaced repetition | Basic repetition |
| GRE-specific | Curated for GMAT | User-generated, variable |
| AI help | Airo explanations | None |
| Integration | Part of full GMAT prep | Standalone |
| Cost | Included in subscription | Free (basic) |
PrepAiro vs Magoosh Vocabulary
| Factor | PrepAiro | Magoosh |
|---|
| Word count | 3,000+ | 1,000+ |
| Algorithm | Adaptive | Flashcard-based |
| AI tutor | Yes (Airo) | No |
| Learning modes | Multiple | Primarily flashcards |
| Cost | ₹250-500/month | One-time $149 |
Recommended Study Plan
Week 1-2: Foundation
| Day | Activity |
|---|
| Daily | 50 new high-frequency words |
| Review | All previously learned words |
| Time | 30-45 minutes |
Week 3-6: Building
| Day | Activity |
|---|
| Daily | 30 new medium-frequency words |
| Review | All previous words (algorithm handles) |
| Airo | Ask about confusing words |
| Time | 45-60 minutes |
Week 7-12: Mastery
| Day | Activity |
|---|
| Daily | 20 new advanced words |
| Review | Focus on weak words |
| Practice | Contextual mode for application |
| Time | 30-45 minutes |
Frequently Asked Questions
How many words do I need for GRE?
A strong GMAT vocabulary includes 1,000-3,000 words. PrepAiro's 500 high-frequency words cover the most essential; medium and advanced words provide depth for 160+ verbal scores.
How long to learn all 3,000 words?
With consistent daily practice (30-60 minutes), most users can cover high-frequency words in 2 weeks, medium in 6 weeks, and advanced in 10-12 weeks.
Does PrepAiro cover GMAT word lists (Barron's, Magoosh)?
PrepAiro's database is compiled from multiple authoritative GMAT sources. Significant overlap with popular lists, plus additional words from recent GMAT analysis.
Can I import my own word lists?
Currently, PrepAiro uses its curated database. Custom word lists are on the roadmap.
How is retention measured?
Retention is calculated from your quiz accuracy and spaced repetition performance. Words reviewed successfully after long intervals indicate strong retention.
Source Links
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