In a thorough or complete manner.
The word 'thoroughly' is correct and can be used in written English. It is an adverb meaning 'in a thorough manner/with great care' and is often used when describing a task that was done completely and carefully. For example: "I thoroughly checked the documents before submitting them to the court.".
M Zola remarked that it surprised him that no novelist had depicted the great city thoroughly.
You say that you respect Parliament, that you answered more questions than your predecessors and that you are the first Prime Minister to appear before a select committee, but in other ways you seem thoroughly hostile to the idea of scrutiny by elected representatives.
Sounds like a 1970s porno, but is actually an ancient and thoroughly respectable Arabic pastime, and the second it started, it immediately went to the top of my "Why El Fenn is better than everywhere else" list.
These rapes (some allegedly involving underaged individuals) are not thoroughly reported on, as the department of immigration is not keeping formal records.
While Honor Blackman thoroughly enjoys herself at the OM fashion shoot and likes the clothes - the Alexander McQueen shirt, Miu Miu trousers and Banana Republic Oxford bags draw particular praise - she hates shopping for outfits herself.
There are 180 official 'sex businesses' in the De Wallen quarter, the Amsterdam red light district, which employ about 2,000 prostitutes who are registered, thoroughly inspected and pay tax.
Charles Kennedy (Former leader of Liberal Democrats dies aged 55, theguardian.com, 2 June) was a rarity in public life: a thoroughly decent man who was honest enough to admit his failings and who was not treated kindly for doing so.
Ludwig does not simply clarify my doubts with English writing, it enlightens my writing with new possibilities
Simone Ivan Conte
Software Engineer at Adobe, UK