Build Your English Vocabulary Systematically
Master 10,000+ English words with scientifically-proven spaced repetition and contextual learning. Build vocabulary that sticks for life.
Smart Vocabulary Learning Features
AI optimizes review timing for maximum retention and minimal time investment
Learn words in real contexts from news, books, and conversations
Images, mnemonics, and visual associations enhance word retention
AI selects words based on your goals, level, and interests
Vocabulary Learning Levels
Essential high-frequency words for basic communication
Academic and professional vocabulary for advanced communication
Sophisticated vocabulary for native-like proficiency
Scientifically-Proven Learning Methods
Test yourself before looking at answers to strengthen memory
Use new words in sentences and real-life situations
Connect words with images and mental pictures
Learn related words and morphological patterns together
How Vocabulary Builder Works
Take a vocabulary test to determine your current level and learning goals.
AI creates a custom word list and study schedule based on your needs.
Learn new words and review previous ones using spaced repetition.
Monitor your vocabulary growth and retention with detailed analytics.
Experience Interactive Word Learning
See how our AI presents words with context and memory aids
Serendipity
/ˌserənˈdɪpəti/ • noun
A pleasant surprise; finding something good by accident
"Meeting my best friend at the coffee shop was pure serendipity."
Think "serene" + "dipity" = peaceful discovery
Ubiquitous
/juˈbɪkwətəs/ • adjective
Present everywhere; seeming to be in all places at once
"Smartphones have become ubiquitous in modern society."
Latin "ubique" = everywhere + "ous" = full of
Vocabulary Success Stories
Anna Martinez
Graduate Student
"I expanded my vocabulary from 3,000 to 8,000 words in 6 months. The spaced repetition system made learning effortless and fun."
David Kim
Software Engineer
"The contextual learning approach helped me understand how words are really used. My reading comprehension improved dramatically."
Priya Patel
Business Analyst
"The visual memory aids made difficult words stick. I can now express myself more precisely in professional settings."