Developer REST API
Sub-millisecond word lookups, prefix/suffix searches, sense extractions, phonetic pronunciations, and semantic relations served over HTTPS.
Words unlock worlds.
Lexidata provides structured English lexical data, a developer-friendly REST API, an official JavaScript client, and dataset export tooling backed by Open English WordNet.
Try:
Lexical GraphWordNet Semantic Network
serendipitynoun · 07525381-n
relationgood fortune · luck
definitiongood luck in making unexpected discoveries
CAPABILITIES
Comprehensive Lexical Tools
Whether querying individual definitions, traversing semantic graphs, or exporting datasets for machine learning, Lexidata provides full-featured developer tools.
JavaScript Client
Universal JavaScript and TypeScript package published to npm with a fluent query builder, intelligent filtering, and typed lexical responses.
Dataset Exports
Export custom slices of the English lexicon formatted in JSON, line-delimited JSONL, CSV spreadsheets, or plain wordlists for data science and AI training.
DEVELOPER EXPERIENCE
Straightforward integration.
Use the lightweight JavaScript package or execute direct HTTP calls from any programming language. No API keys required for open lexical lookup.
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Fluent Query Chaining
Filter by prefix, suffix, length, and grammatical parts of speech in one call.
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WordNet Identifiers
ILI IDs and synset codes for linguistic modeling and NLP pipelines.
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Custom Dataset Exports
Generate clean tabular CSVs or streaming JSONL files for AI training.
// Install: npm install lexidata
import { createClient } from "lexidata";
const lexidata = createClient();
// Lookup word definition & senses
const data = await lexidata.word("serendipity");
console.log(data.senses[0].definition);
// Chain query filters
const results = await lexidata
.query()
.startsWith("cogn")
.partOfSpeech("noun")
.limit(5);Ready to integrate lexical data?
Explore the API documentation, experiment with the dataset builder, or install the package.