Wordnik review
A broad English dictionary with useful vocabulary tools and API access for developers.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Wordnik is an online English dictionary for learners, writers, researchers, vocabulary explorers, and developers building word-related applications. It combines definitions from multiple dictionaries with real-world example sentences, synonyms, antonyms, related-word relationships, audio pronunciations, reverse lookup, word lists, favorites, word-of-the-day content, and random-word lookup. Its web and API access make it useful both for direct vocabulary research and for adding dictionary features to software.
Pricing is organized around API call volume and added data access. Free Basic costs $0 per month and includes 100 calls per hour, nonprofit or research use, and commercial use as a free trial. Hobby costs $10 per month for 1,000 calls per hour. Pro costs $59 per month for 20,000 calls per hour, plus children's and student dictionary definitions and etymology search. Enterprise costs $149 per month for 45,000 calls per hour, pronunciation search, and etymology search. The paid tiers are most relevant when an application needs more request capacity or deeper lookup options.
Wordnik's strongest fit is a product that needs broad English vocabulary data through the Wordnik API. The API covers definitions, examples, spelling suggestions, synonyms, antonyms, phrases, pronunciations, random words, and word-of-the-day data, while the consumer service adds lists and favorites for ongoing exploration. Its focus is narrower than a multilingual dictionary because the published offering centers on English. Choose Wordnik for English-language dictionary features, examples, relationships, and scalable API access; choose another service if multilingual coverage is central to the project.
Wordnik pros and cons
- Where it wins
- Multiple definitions, examples, relationships, and audio in one service
- Developer API supports programmatic word and pronunciation data
- Free Basic plan includes 100 calls per hour
- Where it doesn't
- Focused on English rather than multiple languages
- Higher API volumes require paid monthly plans
- Commercial use on Free Basic is offered as a free trial
Wordnik fact sheet, pricing and score →
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