Overview
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The Conjugation API looks up a word in a dictionary and returns all conjugated forms with the associated English tenses. The forms cover all combinations of present, past, and future with progressive and perfect tense, for each of indicative, conditional, and even passive voice. Additionally, the infinitive with „to“, simple past, and past participle forms are returned for each verb (e.g. „to take“, „took“, „taken“). |
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How to use Linguatools Conjugation API
Connect to API
Endpoint and Parameters
/rest/english/conjugate?verb={verb}
| parameter | description | parameter value |
|---|---|---|
| verb | any English verb (case insensitive) | e.g. change, changed, reach out |
Test the API
You can test the API and develop your own application – for free, with
- our test translate API on Heroku OR
- after sign up in RapidAPI
1. Heroku
Try out the Test API for example with the verb change:
https://lt-nlgservice.herokuapp.com/rest/english/conjugate?verb=change
Important note (!):
The initial Test 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 all English verbs. Only 1200 English infinitives are included in the Test API. The paid API (see below) contains more than 11,000 infinitives.
2. RapidAPI
https://rapidapi.com/petapro/api/linguatools-conjugations
Advantage: Access to the full dictionary database (with limited requests, see section ‚Pricing‘)
API response
If successful, the response JSON object contains the three keys result, conjugated_forms, and conjugation_tables. The key result has the value „OK“:
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{ "result": "OK", "conjugated_forms": [ ... ], "conjugation_tables": { "conditional": [ ... ], "indicative": [ ... ], "passive": [ ... ] } } |
The conjugated_forms key has as value an array containing the infinitive with „to“, simple past, and past participle forms of the verb (e.g. „to take“, „took“, „taken“).
The conjugation_tables key contains an object with the conjugations for all tenses, split into conditional, indicative, and passive.
If not successful, the response object contains only the result key with an error message as value:
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{ "result": "Wort chang nicht im Lexikon." } |
The following shows a complete JSON response object for the verb „change“:
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{ "result": "OK", "conjugated_forms": [ [ "Infinitive", "to change" ], [ "Simple Past", "changed" ], [ "Past Participle", "changed" ] ], "conjugation_tables": { "conditional": [ { "heading": "conditional present", "forms": [ [ "I", "would change" ], [ "you", "would change" ], [ "he/she/it", "would change" ], [ "we", "would change" ], [ "you", "would change" ], [ "they", "would change" ] ] }, { "heading": "conditional present progressive", "forms": [ [ "I", "would be changing" ], [ "you", "would be changing" ], [ "he/she/it", "would be changing" ], [ "we", "would be changing" ], [ "you", "would be changing" ], [ "they", "would be changing" ] ] }, { "heading": "conditional perfect", "forms": [ [ "I", "would have changed" ], [ "you", "would have changed" ], [ "he/she/it", "would have changed" ], [ "we", "would have changed" ], [ "you", "would have changed" ], [ "they", "would have changed" ] ] }, { "heading": "conditional perfect progressive", "forms": [ [ "I", "would have been changing" ], [ "you", "would have been changing" ], [ "he/she/it", "would have been changing" ], [ "we", "would have been changing" ], [ "you", "would have been changing" ], [ "they", "would have been changing" ] ] } ], "indicative": [ { "heading": "simple present", "forms": [ [ "I", "change" ], [ "you", "change" ], [ "he/she/it", "changes" ], [ "we", "change" ], [ "you", "change" ], [ "they", "change" ] ] }, { "heading": "present progressive", "forms": [ [ "I", "am changing" ], [ "you", "are changing" ], [ "he/she/it", "is changing" ], [ "we", "are changing" ], [ "you", "are changing" ], [ "they", "are changing" ] ] }, { "heading": "present perfect", "forms": [ [ "I", "have changed" ], [ "you", "have changed" ], [ "he/she/it", "has changed" ], [ "we", "have changed" ], [ "you", "have changed" ], [ "they", "have changed" ] ] }, { "heading": "present perfect progressive", "forms": [ [ "I", "have been changing" ], [ "you", "have been changing" ], [ "he/she/it", "has been changing" ], [ "we", "have been changing" ], [ "you", "have been changing" ], [ "they", "have been changing" ] ] }, { "heading": "simple past", "forms": [ [ "I", "changed" ], [ "you", "changed" ], [ "he/she/it", "changed" ], [ "we", "changed" ], [ "you", "changed" ], [ "they", "changed" ] ] }, { "heading": "past progressive", "forms": [ [ "I", "was changing" ], [ "you", "were changing" ], [ "he/she/it", "was changing" ], [ "we", "were changing" ], [ "you", "were changing" ], [ "they", "were changing" ] ] }, { "heading": "past perfect", "forms": [ [ "I", "had changed" ], [ "you", "had changed" ], [ "he/she/it", "had changed" ], [ "we", "had changed" ], [ "you", "had changed" ], [ "they", "had changed" ] ] }, { "heading": "past perfect progressive", "forms": [ [ "I", "had been changing" ], [ "you", "had been changing" ], [ "he/she/it", "had been changing" ], [ "we", "had been changing" ], [ "you", "had been changing" ], [ "they", "had been changing" ] ] }, { "heading": "simple future", "forms": [ [ "I", "will change" ], [ "you", "will change" ], [ "he/she/it", "will change" ], [ "we", "will change" ], [ "you", "will change" ], [ "they", "will change" ] ] }, { "heading": "future progressive", "forms": [ [ "I", "will be changing" ], [ "you", "will be changing" ], [ "he/she/it", "will be changing" ], [ "we", "will be changing" ], [ "you", "will be changing" ], [ "they", "will be changing" ] ] }, { "heading": "future perfect", "forms": [ [ "I", "will have changed" ], [ "you", "will have changed" ], [ "he/she/it", "will have changed" ], [ "we", "will have changed" ], [ "you", "will have changed" ], [ "they", "will have changed" ] ] }, { "heading": "future perfect progressive", "forms": [ [ "I", "will have been changing" ], [ "you", "will have been changing" ], [ "he/she/it", "will have been changing" ], [ "we", "will have been changing" ], [ "you", "will have been changing" ], [ "they", "will have been changing" ] ] } ], "passive": [ { "heading": "passive simple present", "forms": [ [ "I", "am changed" ], [ "you", "are changed" ], [ "he/she/it", "is changed" ], [ "we", "are changed" ], [ "you", "are changed" ], [ "they", "are changed" ] ] }, { "heading": "passive present progressive", "forms": [ [ "I", "am being changed" ], [ "you", "are being changed" ], [ "he/she/it", "is being changed" ], [ "we", "are being changed" ], [ "you", "are being changed" ], [ "they", "are being changed" ] ] }, { "heading": "passive present perfect", "forms": [ [ "I", "have been changed" ], [ "you", "have been changed" ], [ "he/she/it", "has been changed" ], [ "we", "have been changed" ], [ "you", "have been changed" ], [ "they", "have been changed" ] ] }, { "heading": "passive present perfect progressive", "forms": [ [ "I", "have been being changed" ], [ "you", "have been being changed" ], [ "he/she/it", "has been being changed" ], [ "we", "have been being changed" ], [ "you", "have been being changed" ], [ "they", "have been being changed" ] ] }, { "heading": "passive simple past", "forms": [ [ "I", "was changed" ], [ "you", "were changed" ], [ "he/she/it", "was changed" ], [ "we", "were changed" ], [ "you", "were changed" ], [ "they", "were changed" ] ] }, { "heading": "passive past progressive", "forms": [ [ "I", "was being changed" ], [ "you", "were being changed" ], [ "he/she/it", "was being changed" ], [ "we", "were being changed" ], [ "you", "were being changed" ], [ "they", "were being changed" ] ] }, { "heading": "passive past perfect", "forms": [ [ "I", "had been changed" ], [ "you", "had been changed" ], [ "he/she/it", "had been changed" ], [ "we", "had been changed" ], [ "you", "had been changed" ], [ "they", "had been changed" ] ] }, { "heading": "passive past perfect progressive", "forms": [ [ "I", "had been being changed" ], [ "you", "had been being changed" ], [ "he/she/it", "had been being changed" ], [ "we", "had been being changed" ], [ "you", "had been being changed" ], [ "they", "had been being changed" ] ] }, { "heading": "passive simple future", "forms": [ [ "I", "will be changed" ], [ "you", "will be changed" ], [ "he/she/it", "will be changed" ], [ "we", "will be changed" ], [ "you", "will be changed" ], [ "they", "will be changed" ] ] }, { "heading": "passive future progressive", "forms": [ [ "I", "will be being changed" ], [ "you", "will be being changed" ], [ "he/she/it", "will be being changed" ], [ "we", "will be being changed" ], [ "you", "will be being changed" ], [ "they", "will be being changed" ] ] }, { "heading": "passive future perfect", "forms": [ [ "I", "will have been changed" ], [ "you", "will have been changed" ], [ "he/she/it", "will have been changed" ], [ "we", "will have been changed" ], [ "you", "will have been changed" ], [ "they", "will have been changed" ] ] }, { "heading": "passive future perfect progressive", "forms": [ [ "I", "will have been being changed" ], [ "you", "will have been being changed" ], [ "he/she/it", "will have been being changed" ], [ "we", "will have been being changed" ], [ "you", "will have been being changed" ], [ "they", "will have been being changed" ] ] } ] } } |
Code snippets
Ruby
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require 'curb' require 'json' apiurl = "https://lt-nlgservice.herokuapp.com/rest/english/conjugate?verb=change" api = Curl::Easy.new(apiurl) api.perform json_data = JSON.parse(api.body_str) |
Python
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import requests import json apiurl = 'https://lt-collocation-test.herokuapp.com/todos/?query=smoke&lang=en' response = requests.get(apiurl) json_data = json.loads(response.text) |
Pricing
Demo based on the API
The conjugation tool https://gramomat.com/en/english/conjugation is based on the Conjugation API. Therefore you can test manually which verbs are in .
Other language APIs by linguatools: https://linguatools.org/language-apis/