therein

[ thair-in ]

adverb

1. in or into that place or thing.
2. in that matter, circumstance, etc.

therein

/ ˌðɛərˈɪn /

adverb

1. formal.
   in or into that place, thing, etc

Word History and Origins

Origin of therein¹

before 1000; Middle English therin, Old English thǣrin. See there, in

Example Sentences

And therein lies the key question of the Letby case: How convincing is the medical evidence that the baby deaths and collapses were definitely crimes rather than naturally occurring events?

From BBC

And therein lies a catch for U.S. consumers: Because Temu specializes in shipping directly from the Chinese manufacturer, most Temu orders arrive at your doorstep within two weeks.

From Salon

And therein lies the crux of the issue.

From Salon

She now hopes to track down anyone who might know something about the images - or even recognise themselves therein.

From BBC

Rashford scored 30 goals in 56 games last season but has only hit the target eight times in 42 matches this term – and therein lies the rationale behind Southgate’s decision.

From BBC

More About Therein

What does therein mean?

Therein means in or into the thing that was just mentioned, as in The container should be inspected before the contents are placed therein (translation: The container should be inspected before the contents are placed in it).

Therein is formal and is often used in legal language.

It can also mean in that matter or circumstance, as in A lot of consumers are looking for a better way to maintain their appliances, and therein lies the business opportunity.

Example: I treasure these books and all the wisdom contained therein.

Where does therein come from?

The first records of the word therein come from before 1000.

There are many similar words based on the combination of the word there and a preposition, each of which has a different meaning, including thereabout, thereabouts, thereafter, thereat, thereby, therefor, therefore, therefrom, thereinafter, thereinto, thereof, thereon, theretofore, thereunder, thereupon, therewith, and therewithal.

Other words are constructed in similar ways, such as wherein, meaning “in what or in which,” as in This is the final episode, wherein we learn the characters’ fates (translation: This is the final episode, in which we learn the characters’ fates).

Did you know ... ?

What are some synonyms for therein?

• thereinto

What are some words that share a root or word element with therein? 

• thereabout
• thereabouts
• thereafter
• thereat
• thereby
• therefor
• therefore
• thereinafter
• thereof
• thereon
• thereto
• theretofore
• thereunder
• therewith
• therewithal
• wherein

What are some words that often get used in discussing therein?

• contained
• included
• listed
• place
• lies
• rub
• problem

How is therein used in real life?

Therein is formal and is often used in legal language.

My father died at the age of 62 in 1979; I miss him daily and so appreciate your tweet and the sentiments contained therein. https://t.co/BPuzaE5bll

— LuigiG (@louieg129) February 13, 2021

Been trying out @roamresearch. Features I would love to have:

– screenshots that auto-save and auto-tag based on text therein
– ability to email in notes with keyword-based auto-tagging
– mobile app and share-to feature (an obvious one…)@Conaw

— Rajeev Mantri (@RMantri) February 9, 2021

It is a big wide world out there and English football has never been more popular globally, and therein lies the opportunity. For me, the key is a strategic bottom-up approach to build a supporter structure based around the overseas players at the club 👇🏽 https://t.co/faG2BXI9H0

— Peter Varney (@_PeterVarney) February 15, 2021

Try using therein!

Is therein used correctly in the following sentence?

The device wasn’t designed for this task, and therein lies the problem.