FIEZEL

FIEZEL Vocabulary — English Vocabulary Practice by CEFR Level

Does FIEZEL teach English vocabulary?

Yes. FIEZEL includes 2,440 curated English vocabulary items classified across CEFR proficiency levels A1, A2, B1, B2, C1, and C2. Rather than static flashcard memorization, FIEZEL uses adaptive spaced repetition and contextual sentence usage, ensuring newly acquired words transition into long-term memory.

Each vocabulary entry features contextual example sentences, definition clarity, pronunciation guidance, and diagnostic comprehension checks. As you practice, FIEZEL tracks which words you find easy and which require additional review cycles.

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Vocabulary Distribution by CEFR Tier

The 2,440 words in FIEZEL are prioritized by real-world communicative utility:

A1 & A2: Essential Foundation

Core survival vocabulary covering daily routines, food, family, occupations, time, shopping, travel essentials, and basic descriptive adjectives. Focuses on high-frequency communicative words.

B1 & B2: Fluency & Context

Expands into professional workplace communication, abstract concepts, emotional nuances, academic discussions, technology, environmental issues, and idiomatic expressions.

C1 & C2: Precision & Mastery

Sophisticated academic and formal lexicon, rhetorical vocabulary, nuanced collocations, rare synonyms, and register-specific phrasing suitable for university study and international professional discourse.

How FIEZEL Spaced Repetition Works

Vocabulary retention in FIEZEL is managed by the Braincore scheduling algorithm:

  1. Initial Encounter: A word is presented in a meaningful sentence context with pronunciation and clear definitions.
  2. Active Recall Testing: The learner is prompted to identify, complete, or select the word in varying sentence structures.
  3. Interval Optimization: Words recalled correctly are reviewed at exponentially increasing intervals (1 day, 3 days, 7 days, 14 days, 30 days). Words answered incorrectly reset to high-frequency practice.
  4. Local Persistence: All retention milestones and stability ratings are saved locally on your device for immediate offline access.

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