Translate API looks up a word in a dictionary and returns all translations ordered by frequency.

The API translates from and to German for the following languages:
English, Spanish, Dutch, Polish, Italian, and Czech.

Translate API allows to filter by word class and by minimum frequency.

How to use Linguatools Translate API

Connect to API

URL parameters:
GET /?langpair={lang1-lang2}&query={word}&wortart={wordclass}&min_freq={number}

parameter description parameter value
query any word (case insensitive) e.g. change
langpair One of the following combinations (case sensitive): de-en, de-es, de-nl, de-pl, de-it, de-cs,
en-de, es-de, nl-de, pl-de, it-de cs-de
wortart One of the following word classes (case sensitive, optional): NOMEN, ADJ, VERB, ADVERB
min_freq any number 1,2,3,75334, etc.

Test the API

Test the test API with:

  • langpair: en-de
  • query: change
  • wortart: VERB (optional)

You can test the API and develop your own application – for free, with

  1. our test translate API on Heroku OR
  2. after sign up in RapidAPI
  1. Heroku

http request

wget "https://lt-translate-test.herokuapp.com/?langpair=en-de&query=change&wortart=VERB"

Important note (!)::
The initial API call might take up to 30 seconds because the heroku dyno falls asleep after 30 minutes of inactivity.
(The test API runs on a free heroku dyno.)

Further limits of the test API
The test API contains only a subset of the complete dictionary database. Therefore only high frequent translations are included (Top 1,000 for every language pair).
E.g.: change, buydo and make in lang: de-en.

2. RapidAPI


Advantage: Access to the full dictionary database (with limited requests, see section ‚Pricing‘)

Connect on RapidAPI

API response

l1_text: german word
l2_text: translation of the german word
wortart: word class (NOMEN (=noun), ADJ, VERB, ADVERB)
synonyme1: „Synonyms“ for the translation of the German word, created by collecting the alternative translations. For instance, the words car, auto, automobile, motor vehicle, motorcar are all translations of the German word Auto and thus can be regarded as „synonyms“.
synomyme2: „Synonyms“ for the German word, created by collecting alternative translations of the translation of the German word.
freq: The number specifies how often the translation was used in our database of translated documents. The higher the number the more common the translation.
Note: Since there is always noise in the dictionary sources as well as in the translated documents, in order to make sure that you only get correct translations you can set the query parameter min_freq (minimum frequency) to 1 to get only translations that have occurred at least once in our corpus. Compare the result of the two api calls with and without min_freq:

Without min_freq:

With min_freq = 15000:

Code snippets




Paid API

Licensing conditions


Connect on RapidAPI

Dictionary sources

The dictionary is compiled from the following sources:

Number of translations in the complete dictionary database and Online Query

lanpair Online-Query Number of translations
de-en/en-de German-English Dict 734.462
de-es/es-de German-Spanish Dict


de-it/it-de German-Italian Dict 64.831
de-nl/nl-de German-Dutch Dict 63.458
de-pl/pl-de German-Polish Dict 30.389
de-cs/cs-de German-Czech Dict 57.603

Endpoint and parameters

The parameters are the same as in the test API.
After sign up to RapidAPI you can access the full translate database (free & paid).

Examples of use

Fluentwords dictionary: https://fluentwords.net/en/dictionary

linguatools context dictionaries:
German-Englisch, German-Spanish, German-Polish, German-Czech, German-Dutch, German-Italian

Other language APIs by linguatools: https://linguatools.org/language-apis/