Diccionario de la lengua española (Real Academia. Im starting with a shorter list for this one because really the only languages I use monolingual dictionaries regularly in are Spanish and Estonian. Here you will find sections with the most searched words in the dictionary, synonyms to help you enrich your vocabulary, and even a section to filter words that contain a certain letter, as well as answering any doubts and curiosities of the Portuguese language. Please add one for any languages that you know well enough to use a monolingual dictionary Criteria: The dictionary should be monolingual.

On the other hand, if you need a Brazilian Portuguese reference, one of the top institutions online is Dicio: Dicionário Online de Português. COLLINS ENGLISH DICTIONARY ONLINELorena Sainz-Maza Lekanda 2. One of the best is Infopédia: Dicionários Porto Editora, a very comprehensive online dictionary that is easy to access and use, and also includes sections dedicated to orthography, medical terms, acronyms and abbreviations, and even Portuguese for foreigners. They can give you alternatives - sometimes better ones - to the first word that comes to mind. Besides their Spanish-to-English dictionary, SpanishDict also has a great conjugation tool, a word-of-the-day feature, quizzes, easy-to-understand grammar lessons, and more.

As for Portuguese from Portugal, there are some top quality websites for monolingual dictionaries of the language. Bilingual dictionaries often serve a similar role to thesauruses. SpanishDict is an extremely accessible online dictionary that has a clean, sleek interface, making it a leading tool for those learning Spanish.

Spanish monolingual dictionary online