Wiktionary is a free online dictionary for multiple languages.

Dictionary.com is the best online dictionary for word definitions and language tips, used by students, writers, and language enthusiasts.

Urban Dictionary is a online dictionary for slang words and phrases.

The Free Dictionary is an online dictionary, thesaurus, and encyclopedia for language reference and is used by students, writers, and researchers.

Collins Dictionary is an online dictionary and reference resource providing definitions, thesaurus, translations, and language learning tools.

YourDictionary is the best online dictionary for definitions and grammar tips and is used by students and lifelong learners.

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dict.cc is a multilingual online dictionary focusing on community-driven German-English translations, vocabulary training, and language forums.

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English Turkish online dictionary Tureng, translate words and terms with different pronunciation options.

Free online dictionary with definitions, translations, and more.

Wordnik is a non-profit resource providing comprehensive word data, definitions, and tools for language enthusiasts, writers, and developers.

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abadis.ir is an online dictionary service for persian and english language users.

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Woorden.org is an online Dutch dictionary for Dutch language users.

Wordsmyth is a comprehensive online dictionary and vocabulary tool suite featuring leveled dictionaries, thesaurus, and engaging learning activities for ESL learners, students, and teachers.