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Word Forms and Inflections Lookup
x402
Word Forms and Inflections Lookup is a paid API for AI agents from dictionary-wiktionary.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-11-02).
Returns inflected forms of an English word by part of speech (plural, past tense, -ing, etc.) and identifies the base lemma if the input is itself an inflection.
Price / call$0.02
Success—
StatusUnknown
How this service works
Inflected forms of an English word by part of speech (plural, past, -ing) and the base word if it is an inflection.
Output
Returns a structured object containing the queried word, its lemmas (base forms), and per-entry data grouped by part of speech — including an array of inflected forms each with a form string and descriptive label (e.g. 'plural', 'past tense', 'present participle'). Also includes a formOf array indicating if the word is itself an inflection of another lemma, plus metadata like source URL, license, and data freshness timestamp.
Example use cases
Normalize irregular verb forms in NLP pipeline
“I'm processing text and I keep seeing words like 'went', 'mice', and 'ran' — can you look each one up and tell me what base lemma they come from and what part of speech they are?”
Grammar checker inflection validation
“Can you look up the word 'write' and get me all its inflected forms by part of speech, like past tense, present participle, and third person singular?”
Language learning app word forms display
“I'm building a vocabulary card for the word 'good' — can you fetch all its inflected forms and labels from Wiktionary so I can show learners things like comparative and superlative forms?”
Technical details
Endpoint
GEThttps://dictionary-wiktionary.x402tookit.com/word-forms?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured morphological data for English words — specifically their inflected forms by part of speech or the base lemma of an inflected form. Prefer this over a full dictionary definition endpoint when you only need morphology (not definitions or etymology), or when normalizing tokens in NLP pipelines. It is particularly valuable for irregular forms like 'went'→'go' or 'mice'→'mouse' that rule-based stemmers miss.
Side effects
- Word not found in Wiktionary returns empty or null entries
- Non-English words may return no results or degraded data
- Highly archaic or rare words may have incomplete form coverage
- Misspelled input returns no matches
- Ambiguous words with multiple etymologies may return partial or inconsistent forms
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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