extensive research vs extensive researches

The correct phrase is 'extensive research.' The term 'research' is typically used in the singular form, even when referring to a large amount of research. 'Extensive researches' is not a common or correct phrase in English.

Last updated: March 31, 2024 • 3486 views

extensive research

This phrase is correct and commonly used in English.

Use 'extensive research' when referring to a thorough and comprehensive investigation or study on a particular topic.

Examples:

The team conducted extensive research on the effects of climate change.
Her book is based on extensive research into ancient civilizations.
The company invested in extensive research before launching the new product.

Show examples from the web [+]

He did extensive research, but death by hanging is cruel.
Blix is also credited for conducting extensive research on the physiology of muscles.
After extensive research and much feedback, it has excellent customer support.
The descriptions of the ghosts and spirits are based on extensive research as well as her own interpretations.
Ernst Boll is remembered for his extensive research involving the natural history of Mecklenburg.
This process requires extensive research in order to determine you are receiving the best deal possible.
Ruete also conducted extensive research of ophthalmic disorders that included strabismus and hypermetropia.
I did extensive research on the Peterson hip.
These muscle-boosting ingredients have been subjected to extensive research for years.
You did extensive research on its electrical system.
For Kontouris, each project is unique and extensive research underpins the development of each product.
I don't know, but I'm sure that the women of the world appreciate your extensive research on the subject.
I've conducted extensive research, and all that I can tell you is that, whoever it was...
Throughout the 1950s and 1960s, scientists in several countries conducted extensive research into experimental chemotherapeutic, and psychotherapeutic uses of psychedelic drugs.
Before accepting the role, Costner conducted extensive research on Garrison, including meeting the man and his enemies.
After settling in Hawaii he married Heather Birkett, a clinical psychologist, who later carried out extensive research using the 16PF and other tests.
Before even doing extensive research I knew I'd heard the brand Oscar de la Renta associated with at least some crochet.
The creative team of developers spent over a year doing extensive research before making it available to the public.
A: C ureVitiligoOil is a pure herbal product made after years of extensive research and experiments.
According to extensive research, tea is instrumental in preventing heart disease, strengthening bones and reducing the risk of certain types of cancer.

extensive researches

This phrase is not correct in English. 'Research' is typically used in the singular form.

Show examples from the web [+]

I've done extensive researches as far as across the layout of the prison what screws they use, what bolts they use.

Alternatives:

extensive studies
in-depth research
comprehensive research
thorough investigation
extensive exploration

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extensive research vs extensive researches