thereby
UK: ˌðeəˈbaɪ | US: ˌðerˈbaɪ
Definition
adv. by that means; as a result of that action or circumstance
Structure
there <in that place>by <through, near>
Etymology
The word "thereby" combines the Old English roots of "there" (indicating place or circumstance) and "by" (denoting proximity or means). Originally used in Middle English (14th century), it literally meant "by that place" but evolved to express logical consequence ("by that means"). The morphemes retain their original spellings while shifting toward an abstract adverbial function.
Examples
She completed the project early, thereby earning a bonus.
He forgot his keys, thereby locking himself out.
The law was amended, thereby addressing public concerns.
They reduced costs, thereby increasing profits.
The bridge collapsed, thereby cutting off the village.