The Wortprofi® is a reliable reference work for German spelling, featuring approximately 42,000 keywords and over 100,000 entries. It includes challenging word meanings with numerous examples of their usage, such as typical word usage, idioms, and proverbs. The book provides guidance on syllable division, intonation, pronunciation, origin, and grammar, as well as writing variants and abbreviations. It also includes notes on words that sound the same but are spelled differently, and similarly spelled words with different meanings. The Wortprofi® offers a clear introduction to German spelling, including writing aids and rules suitable for students, as well as an extensive compilation of word fields.