Pronominal is adjective form of word pronoun, meaning relating to pronoun. Most things containing pronoun can be described by adjective pronominal.
What is pronominal adverb?
We know that a preposition is followed by a noun phrase to form a prepositional phrase. Certain prepositions (in) followed by certain pronouns (that) form a prepositional phrase (in that), which can be converted into a single word (in that = therein) that functions adverbially. (After combining, preposition and pronoun swap their places.) The combined word so formed is called pronominal adverb.
Why is it called pronominal adverb? As mentioned in the opening paragraph, we can use the term pronominal with most things containing pronoun, and here the adverb has been built on a pronoun (that).
Pronominal adverbs are mostly found in legal documents as a way of referencing words earlier in the text.
We just saw an example of pronominal adverb (therein). More follow. In each example sentence, you can replace the adverb (herein) with its equivalent (in this) and see if it works. It will.
Examples of pronominal adverb
1. In this = Herein
The details provided herein outline Standard Operating Procedure.
2. On this = Hereon
The signature hereon attests our commitment to this cause.
3. By this = Hereby
I hereby declare the games open.
4. From this = Herefrom
The lessons learned herefrom will improve our next marketing campaign.
5. Under this = Hereunder
The terms listed hereunder cannot be violated.
6. After this = Hereafter
These rules will be in effect hereafter.
7. For this = Herefor
The company will not be responsible herefor and will bear no liability.
8. With this = Herewith
Please find the attached documents herewith.
9. In that = Therein
It’s a story of a forest and the animals living therein.
10. On that = Thereon
The President signed the executive order and placed his seal thereon.
11.By that = Thereby
He completed the project ahead of schedule, thereby earning a bonus.
12. To that = Thereto
The new law and the rules pertaining thereto are currently under discussion in the parliament.
13. From that = Therefrom
The company has invested in securities of different types. Income accrued therefrom will exceed $60 million this year.
14. After that = Thereafter
I came back from outside and started with my homework shortly thereafter.
15. At that = Thereat
The decision to launch new product features was announced, making the employees pleased thereat.
16. About that = Thereabout
I was last in the town ten years back or thereabout.
17. Upon that = Thereupon
The government passed a new tax law and acted thereupon without delay.
18. By which = Whereby
The government has launched an alternate tax regime whereby you get lower tax slabs but also fewer exemptions.
19. In which = Wherein
The manual outlines the process, wherein each step is detailed.
20. Of which = Whereof
The team lost spectacularly in the final, the reasons whereof will be discussed threadbare for weeks.