WordWeb Online Dictionary and Thesaurus is a searchable English reference service offering definitions, synonyms, related words and spelling information across several varieties of English. The service is part of the wider WordWeb dictionary platform developed by Antony Lewis and WordWeb Software.
The online service covers American, British, Australian, Canadian and Asian English. Its website states that the database is regularly updated and that the online dictionary does not display advertising.
Dictionary and thesaurus features
WordWeb combines dictionary definitions with synonyms, antonyms, related words, usage examples and pronunciation information. The wider WordWeb platform also allows users to move between connected words and explore relationships such as types, parts and similar terms.
The WordWeb website lists more than 300,000 words, compounds and derived forms, more than 130,000 synonym sets and about 70,000 pronunciations for its Pro database. The platform also supports pattern searches and anagram searches.
Recent database updates
WordWeb Online currently states that its online database was last updated in February 2025. The update included terms such as biodigester, cryptoasset, gridlock, markdown, nomophobia, robotaxi and zhush up.
The company’s support information lists WordWeb version 10.62 for its desktop software. That release includes additional words and senses, improved one-click lookup reliability and fixes related to multi-monitor use.
Access across devices
WordWeb is available through its website as well as applications for Windows, Mac, iPhone, iPad and Android. The mobile applications provide dictionary and thesaurus functions, including offline access to core reference material.
The iPhone and iPad version includes definitions, usage examples, synonyms, related words, spelling suggestions and pattern searches. Its published update history includes new words and definitions, full-text search and compatibility updates for newer versions of Apple’s operating system.
Additional reference sources
WordWeb can connect users with additional reference sources, including Oxford, Collins and Chambers dictionaries. The platform also provides access to online reference material such as Wikipedia when additional information is available.
WordWeb also offers access to its dictionary database for developers. Its developer information describes support for definitions, usage examples, derived forms and word relationships across multiple varieties of English.
WordWeb Online remains available as a browser-based dictionary and thesaurus, while the company’s desktop and mobile products continue to receive separate software and database updates. The latest listed desktop version is WordWeb 10.62, while the online service identifies February 2025 as its most recent database update.