Pick a deck and tap to flip — Space / ←→ keyboard shortcuts
Choose any deck from the selector above — it stays visible so you can switch decks anytime without losing your place. Tap or click a card to flip it and reveal the definition and example sentence. Mark it "Got it" if you knew the answer, or "Don't know" if you need more practice. At the end of the deck, you'll see your score and can immediately restart with just the cards you missed.
Keyboard shortcuts: press Space or the up/down arrow keys to flip a card, → (right arrow) to mark "Got it," and ← (left arrow) to mark "Don't know." This lets you study quickly without touching your mouse or screen.
Spaced repetition is a learning technique backed by decades of cognitive science research. The core idea is simple: review material at increasing intervals over time, reviewing each item right before you are about to forget it. This exploits the "spacing effect," first documented by Hermann Ebbinghaus in 1885, which shows that information reviewed across multiple spaced sessions is retained far longer than information crammed in a single session.
The practical implication: studying a deck once, then returning to it after 24 hours, then after 3 days, then after a week, then after two weeks dramatically outperforms studying the same total time in a single marathon session. After your first review, most of the work is done — the subsequent short reviews lock the material into long-term memory with minimal effort.
Focus your reviews on the cards you got wrong. Research by cognitive psychologist Robert Bjork shows that "desirable difficulty" — struggling slightly to retrieve an answer — strengthens the memory trace more than easily reviewing cards you already know.
Flashcards train recognition — seeing a word and recognizing its meaning. But real English fluency requires production — being able to use the word naturally in speech and writing. To bridge this gap:
Everyday English covers the most common expressions, phrasal verbs, and phrases used in daily spoken English — the vocabulary that native speakers use constantly but textbooks often underemphasize.
Travel English prepares you for real-world travel situations: airports, hotels, restaurants, transport, money, and emergencies. Every card is a phrase or term you may genuinely need when traveling in an English-speaking country.
Entry Level (A1–A2) covers foundational vocabulary mapped to the Common European Framework of Reference (CEFR) A1 and A2 levels. If you are a beginner or helping someone just starting English, this deck provides the essential building blocks.
B1 Intermediate and B2 Upper-Intermediate follow the CEFR framework with vocabulary appropriate for learners aiming for professional or academic English proficiency. B2 is roughly equivalent to the Cambridge First Certificate (FCE) level.
Advanced (C1–C2) features sophisticated, low-frequency vocabulary drawn from academic and literary English — the words that separate fluent speakers from truly educated ones. C2 corresponds to the Cambridge Proficiency Exam (CPE) level.
Phrasal Verbs focuses on the 25 most essential phrasal verbs in English. Phrasal verbs are notoriously difficult for learners because their meanings are rarely predictable from the component words — "give up," "carry out," and "look forward to" must be learned as units.
Idioms covers fixed expressions whose meanings are figurative rather than literal. Idioms are everywhere in native speech and writing but largely absent from formal teaching materials. Knowing them is essential for following natural conversation.
Collocations teaches which words naturally go together in English. Knowing that English speakers say "make a decision" (not "do a decision") and "heavy rain" (not "strong rain") is the difference between grammatically correct English and natural English. Collocation errors are the most common marker of non-native speech even at advanced levels.
Formal Writing provides the discourse markers, transitions, and hedging phrases used in academic essays, business reports, and professional correspondence. These phrases signal to a reader that you understand the conventions of formal written English.
For beginners (A1–A2): Focus on high-frequency vocabulary — the 1,000 most common English words cover roughly 85% of everyday conversation. Don't try to memorize every word you encounter; prioritize the words that appear most often. Use the Entry Level deck daily and practice speaking out loud, even if only to yourself.
For intermediate learners (B1–B2): Vocabulary learning becomes more nuanced. Focus on collocations, phrasal verbs, and idiomatic expressions — these are the areas where intermediate learners most often sound unnatural even when their grammar is correct. Reading extensively in English (news articles, novels, blog posts) is the most efficient way to encounter and absorb vocabulary in context at this level.
For advanced learners (C1–C2): The bottleneck is no longer core vocabulary but rather precision and register — knowing not just the meaning of a word but when and how to use it appropriately. Focus on low-frequency but high-impact vocabulary, synonyms and their subtle differences (commence vs. begin vs. initiate), and the rhetorical patterns of sophisticated written English.