Top Alternatives to Merriam-Webster

Google Translate is a cloud based language translator developed by Google.

GoldenDict is a feature-rich dictionary lookup program, supporting multiple dictionary formats.

Lingoes is a single-click multi-lingual translation software program released as a freeware translation utility.

Google Dictionary was an online dictionary service of Google, originating in its Google Translate service.

Dictionary.com is an online dictionary platform.

Ludwig is a smart translator and linguistic search engine which helps you to find the perfect word or sentence to express your ideas.

StarDict is a free GUI released under the GPL for accessing StarDict dictionary files.

WordReference is an online translation dictionary for, among others, the language pairs English-French, English-Italian, English-Spanish, French-Spanish, Spanish-Portuguese and English-Portuguese.

Apple Dictionary is an application a part of macOS. The application provides definitions and synonyms from various dictionaries, Wikipedia articles and a glossary of Apple-related terms.

Wiktionary is a multilingual, web-based project to create a free content dictionary of all words in all languages.

dict.cc is a free, multilingual online dictionary. The site's database can also be downloaded and used offline.

Reference.com is an online encyclopedia.

Wordo helps you find word definitions.

Wordnik is an online English dictionary and language resource that provides dictionary and thesaurus content.