Dictionary.com
Free
Dictionary.com is an online dictionary platform.
Wiktionary
Open Source
Wiktionary is a multilingual, web-based project to create a free content dictionary of all words in all languages.
Merriam-Webster
Free
Merriam-Webster is an online dictionary.
WordReference
Freemium
WordReference is an online translation dictionary for, among others, the language pairs English-French, English-Italian, English-Spanish, French-Spanish, Span…
Reference.com
Free
Reference.com is an online encyclopedia.
Compare Wordnik with alternatives
Compare Dictionary.com and Wordnik and decide which is most suitable for you.
Compare WordReference and Wordnik and decide which is most suitable for you.
Compare Reference.com and Wordnik and decide which is most suitable for you.
Compare Merriam-Webster and Wordnik and decide which is most suitable for you.