Thesaurus.com

Los Altos, United States Founded: 1995 • Age: 31 yrs Acquired By IXL Learning
English synonyms, antonyms, and adjectives are provided online with filters.

About Thesaurus.com

Thesaurus.com is a company based in Los Altos (United States) founded in 1995 was acquired by IXL Learning in April 2024. Thesaurus.com offers products and services including Synonym of the Day and Word Games. Thesaurus.com operates in a competitive market with competitors including Babbel, Rosetta Stone, Memrise, Learnlight and Lingvist, among others.

Key Metrics

Products & Services of Thesaurus.com

Thesaurus.com offers a comprehensive portfolio of products and services, including Synonym of the Day and Word Games.

Synonym of the Day
Language Tool

Daily feature for exploring synonyms and expanding vocabulary

Word Games
Educational Games

Interactive puzzles to practice and enhance language skills

Investors in Thesaurus.com

Thesaurus.com has secured backing from 2 investors, including institutional investors. Prominent investors backing the company include IXL Learning and Rock Ventures.

All
Institutional
InvestorDescriptionFounded YearDomainLocation
Investment holding company
2007rockventures.comDetroit, United States
Personalized instruction in core subjects is delivered via subscriptions.
1998ixl.comSan Mateo, United States
Premium access

Investor details for Thesaurus.com

The complete investor list, round-by-round participation and investor portfolios require an active premium plan.

  • Complete investor list
  • Round participation
  • Investor portfolios
  • Co-investor network

Verified entity values are shown only after access is granted.

Timeline of Thesaurus.com

3 dated milestones of Thesaurus.com across 29 years, from founding to its latest funding, stage changes and deals.

  1. Founded Thesaurus.com is founded.
  2. Exit Acquired by Rock Ventures.
  3. Exit Acquired by IXL Learning.

Competitors of Thesaurus.com

Thesaurus.com operates in a dynamic and competitive business environment, facing competition from various established players and emerging companies in the market. The competitive landscape includes prominent companies such as Babbel, Rosetta Stone, Memrise, Learnlight and Lingvist, among others.

Company NameDomainFoundedHQ LocationTotal fundingEmployeesDescription
babbel.com2007Berlin, Germany$34.2M519
SaaS-based language learning solutions are offered through interactive courses.
rosettastone.com1992Arlington, United States$62M1,155
Speech-recognition technology is utilized for language learning software solutions.
memrise.com2010London, United Kingdom$24.98M40
Languages are learned via crowdsourced content on an online platform.
learnlight.com2007Madrid, Spain––
Learning management systems and enterprise courses are provided.
lingvist.com2013Tallinn, Estonia$16.09M13
Data-driven adaptive language learning is delivered via SaaS and apps.
ponddy.com2015San Jose, United States$13.46M–
AI-based platform for educators to create and deliver language learning programs
dictionary.com1995Oakland, United States–2
English definitions, synonyms, and pronunciations are provided online.
gymglish.com2004Paris, France$3.45M–
Adaptive English lessons are delivered via daily emails.
worddive.com2009Tampere, Finland$262,885–
Adaptive online courses for multiple languages are offered.
fluent-forever.com2013Chicago, United States$5.47M–
Language learning resources are offered via personalized flashcards.
Premium access

Detailed competitors of Thesaurus.com

The full competitor set, operating metrics and side-by-side benchmarks require an active premium plan.

  • Full competitor set
  • Operating metrics
  • Benchmarks
  • Competitive positioning

Verified entity values are shown only after access is granted.

Web traffic of Thesaurus.com

The website of Thesaurus.com (thesaurus.com) receives about 15.1M visits a month and ranks #4,451 among all websites worldwide, #49 in Dictionaries and Encyclopedias.

  • Monthly visits
    15.1M

    ▲ 7.8% vs previous month

  • Unique visitors
    5.5M

    per month

  • Global rank
    #4,451

    among all websites

  • Category rank
    #49

    Reference Materials · Dictionaries and Encyclopedias

Similar websites

Websites whose visitors overlap most with Thesaurus.com. Affinity shows how closely the audiences match.

WebsiteDomainAudience affinityMonthly visitsGlobal rankProfile
merriam-webster.com
100%
–#895View details
wordhippo.com
wordhippo.com
83%
–#7,013–
powerthesaurus.org
powerthesaurus.org
76%
–#20,299–
dictionary.cambridge.org
dictionary.cambridge.org
75%
–#1,207–
dictionary.com
75%
9.7M#6,973View details
β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’.comβ€’β€’%β€’.β€’M#‒‒‒‒‒–
β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’.comβ€’β€’%β€’.β€’M#‒‒‒‒‒–
β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’β€’.comβ€’β€’%β€’.β€’M#‒‒‒‒‒–
Premium access

All 40 similar websites and full traffic analytics for Thesaurus.com

The complete similar-websites list, audience overlap and engagement analytics require an active premium plan.

  • 40 similar websites
  • Audience overlap
  • Engagement analytics
  • Traffic by brand

Verified entity values are shown only after access is granted.

Latest news on Thesaurus.Com

Premium access

Complete news archive for Thesaurus.com

Full article history, source details, and older brand coverage require an active premium plan.

  • Full article archive
  • Source and publication date
  • Older coverage
  • Brand-specific news history

Verified entity values are shown only after access is granted.

Similar companies to Thesaurus.com

10 companies that operate in the same segment as Thesaurus.com (Corporate & Professional Learning Platforms), ranked by their profile score on The Company Check.

CompanyDescriptionFoundedLocationTotal fundingRevenueEmployees
Developer of a platform providing gamified language learning through interactive exercises
2011Pittsburgh, Pennsylvania, United StatesUSD 183.3 MUSD 748.02 M830
Professional certification training courses are provided via an online platform.
2015Mumbai, Maharashtra, IndiaUSD 371.77 MUSD 143.62 M7,112
Cloud-based LMS platform for IT industry
2004Farmington, United StatesUSD 235.41 MUSD 4.95 M260
Professional certification programs are delivered through a mobile platform.
2010San Francisco, California, United StatesUSD 80.82 MUSD 84.24 M1,661
An online platform for multi-course education is operated.
2012Mountain View, California, United StatesUSD 443.17 MUSD 757.5 M1,260
Online courses in creative fields are delivered by celebrity experts.
2012San Francisco, California, United StatesUSD 461.4 M–623
Executive education programs from global universities are offered to professionals.
2010Singapore, SingaporeUSD 961.07 M––
Vernacular-based hyperlocal platform for online programming mentoring is developed.
2014Chennai, Tamil Nadu, IndiaUSD 3.9 MUSD 4.13 M496
Mobile and cloud-based resources for medical exams are delivered.
2012Berlin, Berlin, GermanyUSD 291.94 M––
One-to-one online English tutoring is provided by 51Talk.
2011Beijing, ChinaUSD 89 MUSD 95.85 M539
Upgrade to premium

Unlock complete access to The Company Check

Get unrestricted viewing across everything we track β€” from companies and brands to investors, funding rounds, acquisitions, financials, and more.

Upgrade to Premium No viewing limits. Your plan controls exports and screening usage.
Included in your Premium account
  • βœ“
    Unlimited viewing on all profiles Companies, investors, financials, funding, acquisitions & directors
  • βœ“
    Full access to every database India & global coverage, advanced filters and rich profile details
  • βœ“
    Always-on access from your team account Single premium plan for everything you see on the portal

Frequently Asked Questions about Thesaurus.com

Thesaurus.com was founded in 1995.

Thesaurus.com is headquartered in Los Altos, United States. It is registered at Los Altos, California, United States.

Thesaurus.com was founded in 1995 and is based in Los Altos, United States. An online platform is operated to deliver English synonyms, antonyms, and adjectives. Results can be filtered by relevance, complexity, length, word origins, and other criteria. Native mobile applications are available for iOS and Android devices. The service functions within the digital language resources sector, supporting user queries for word-related information.

Thesaurus.com's top competitors include Babbel, Rosetta Stone and Lingvist.

Thesaurus.com offers Synonym of the Day and Word Games.

Thesaurus.com has 2 investors. Key investors include IXL Learning, and Rock Ventures.

Yes. Thesaurus.com was acquired by Rock Ventures in November 2018.

The website of Thesaurus.com receives about 15.1 million visits a month and ranks #4,451 among all websites worldwide.

Explore millions of companies β€” effortlessly

Access structured, verified intelligence on 7M+ companies across industries, sectors, and global markets. From early-stage startups to large enterprises, discover ownership, leadership, funding, financials, acquisitions, and market signals β€” all in one powerful platform.

Free account with essential features Instant access to company reports Enterprise solutions available