api.lexicala.com

Features

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The broadest wealth of semantic, syntactic, and grammatical features offering different types of search: 

  • words & phrases
  • definitions
  • examples of usage
  • domain classification
  • register
  • synonyms & antonyms
  • frequency
  • morphology
  • acronyms & abbreviations
  • pronunciation & audio
  • translations
  • 50 languages 

Engineered for Integration

Developer-First Architecture

Well-architected JSON responses designed for seamless ingestion into GenAI and NLP pipelines, Knowledge Graphs, and RAG systems.

Global Reach at Scale

25 monolingual cores and numerous bilingual and multilingual sets across 50+ languages and 100 domains, providing a unified schema for global applications.

Human - Centric

Expertly conceived and verified datasets, eliminating the noise common in scraped web data.

Core Feature Clusters

Deep Semantic Senses: Access granular definitions and sense-linked translations for precise word-sense disambiguation (WSD).


Relational Mapping: Integrated synonyms and antonyms to build semantic networks.


Contextual Metadata: Usage examples that provide the ground truth for LLM training, fine-tuning, and evaluation.


Domain & Register Tagging: Access semantic categories (e.g., Law, Medicine, Sports) and register labels (e.g., Formal, Offensive, Slang) to classify and filter vocabulary by subject matter or usage style.

Morphological Analysis: Full breakdown of gender, number, and syntactic properties.


Advanced Lemmatization: Transform inflected forms into base lemmas for efficient indexing and search.


Word Frequency Data: Rank and filter vocabulary based on real-world usage — essential for EdTech curriculum building.


Syntactic Filtering: Precision access to grammatical categories and attributes.


Pronunciation Data: IPA transcription and human-voice audio of words and phrases across multiple languages.s.

Intelligent AutoComplete: Power your search bars with linguistically aware suggestions.


DidYouMean (Spellcheck): Advanced error-correction logic based on lexical proximity.


Semantic Search: Go beyond string matching – search by definition.


Fluky Search (Discovery): Random search across the datasets for gamified language learning and serendipitous discovery.

Translate-To: Get translations for word and specific senses in your target language.


Translate-Example: Find the translation equivalents of examples of usage.


Translate-Phrase: Find the translation of a specific phrase or idiom.

Profanity Check: Verify whether a word is flagged as profanity in each language.

API Capabilities

💡 Note:

All search operations are language-specific. A valid language parameter must be provided with every request to scope results to the intended dataset.

Search & Discovery

Finding entries — by lemma text, by definition meaning, by similarity, or at random.

FeatureData PayloadPrimary Use Case
/searchMatching headwords and IDs.Standard search result pages.
/search-entries-liteFull entry detail.Full entry results.
/search-definitionsRanked semantic query.Reverse-lookup.
/autocompletePredictive suggestions.Search-as-you-type UI.
Entry & Sense Retrieval

Direct lookup by unique identification.

FeatureData PayloadPrimary Use Case
/entries-lite/{id}Full lexical object.Displaying dictionary entry.
/senses-lite/{id}Meaning hierarchy.Detailed sense information.
Word Features

Single-attribute lookups for a lemma.

FeatureData PayloadPrimary Use Case
/definitionsExplanation text.Clear explanations.
/synonymsMapped synonyms.SEO and content.
/examplesReal-world context.Usage demonstration.
/pronunciationsIPA transcriptions.Speech and learning apps.
Translation

Cross-lingual capabilities.

FeatureData PayloadPrimary Use Case
/translate-toEquivalents.Multilingual applications.
/translate-exampleExample translation.Contextual learning.
Abbreviations

Powered by STANDS4 integration.

FeatureData PayloadPrimary Use Case
/abbreviationsAcronym lookup.Technical/Legal expansion.
/reverse-abbreviationsFind by phrase.Authoring tools.
Other Utilities

NLP and content safety helpers.

FeatureData PayloadPrimary Use Case
/lemmatizeBase form (Lemma).Text normalization.
/check-profanityOffensive check.Content moderation.