en.wikipedia.org/wiki/Merriam%E2%80%93Webster%27s_Dictionary_of_English_Usage

Merriam–Webster's Dictionary of English Usage is a usage dictionary published by Merriam-Webster, Inc., of Springfield, Massachusetts . It is currently available ...

en.wikipedia.org/wiki/Dictionary

A dictionary, sometimes known as a wordbook, is a collection of words in one or more specific ..... their treatment of the language does affect usage to some degree, with even the most descriptive dictionaries providing conservative continuity.

en.oxforddictionaries.com/usage

Affect or effect? Complement or compliment? Imply or infer? Its or it's? This section will help you avoid the most common mistakes in language usage.

www.dictionary.com/browse/usage

Usage definition, a customary way of doing something; a custom or practice: the usages of the last 50 years. See more.

www.merriam-webster.com/dictionary/usage

Usage definition is - firmly established and generally accepted practice or ... See the full definition for usage in the English Language Learners Dictionary. usage.

www.amazon.com/Merriam-Websters-Dictionary-English-Usage-Merriam-Webster/dp/0877791325

For more than 150 years, in print and now online, Merriam-Webster has been America's leading and most-trusted provider of language information.

www.merriam-webster.com/help/explanatory-notes/dict-usage

Usage Labels. Three types of status labels are used in this dictionary—temporal, regional, and stylistic—to signal that a word or a sense of a word is not part of ...

www.macmillandictionary.com/us/live

Resources and tools for living, studying and working in English. Resources for both English learners and advanced English speakers.

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The American Heritage Dictionary of the English Language, Fifth Edition, is a record of English .... A word or definition so labeled is discussed in a Usage Note.