Here's why:
* Comprehensive Coverage: The OED contains a vast collection of words, including archaic, dialectal, and technical terms, giving you a complete picture of how the language has changed over time.
* Etymology: For each word, it provides detailed information about its origin, including its earliest known use, and how its meaning has evolved.
* Historical Citations: The OED includes numerous historical citations from literature, documents, and other sources, illustrating how words have been used in different contexts over centuries.
* Usage Notes: The OED provides insightful notes on the nuances of word usage, including regional variations, shifts in meaning, and common errors.
* Regional Dialects: It also includes information on regional dialects and how they have influenced the standard English language.
While the OED is a powerful tool for language research, it's less useful for tasks that require:
* Modern Definitions: For everyday definitions, online dictionaries like Merriam-Webster or Dictionary.com are often more convenient.
* Current Usage: The OED primarily focuses on historical usage, and its entries may not reflect the most recent trends in word usage.
* Specialized Terms: For specialized fields, it's best to consult dictionaries tailored to those disciplines.
In conclusion, the OED is an invaluable resource for researchers, historians, and anyone interested in the fascinating evolution of the English language.