The Oxford English Dictionary (OED) is widely regarded as the most authoritative and comprehensive dictionary of the English language. It contains over 600,000 words, phrases, and definitions, along with their etymologies and historical usage. The OED is known for its detailed and scholarly approach, making it an invaluable resource for linguists, researchers, and language enthusiasts. With its extensive coverage of both current and historical English, this dictionary provides a deep understanding of the language's evolution over time.