Quick answer
Therewith usually means "with that" or "with it." In some contexts, it can also mean "immediately after that."
Word page
Therewith is a formal adverb meaning with that, with it, or immediately after that. It sounds old-fashioned today, but it still turns up in legal, literary, and deliberately formal prose.
Therewith usually means "with that" or "with it." In some contexts, it can also mean "immediately after that."
Pronunciation tip: keep the main stress on the capitalized syllable in thair-WITH.
In plain English, therewith points back to something already mentioned. If rights pass therewith, the rights pass with the thing just named.
Therewith is formal, literary, and old-fashioned. It can sound elegant in historical prose, but in modern instructions or emails, "with it" or "with that" is clearer.
| Common mistake | Better guidance |
|---|---|
| Using it in casual speech | Therewith sounds unusually formal in conversation. |
| Forgetting what there refers to | The reader needs a clear earlier noun or action. |
| Confusing it with thereunder | Thereunder means under that; therewith means with that. |
| Using it when with it is clearer | Most modern prose benefits from the simpler phrase. |
| Similar word | Difference or nuance |
|---|---|
| with that | The plainest substitute. |
| with it | Clear when referring to a thing already mentioned. |
| along with it | Useful when something accompanies another thing. |
| immediately after that | Fits the sequence sense. |
| thereunder | Another legal there-word, but it means under that. |
without it, apart from that, separately, before that
Therewith belongs to a family of formal there-words such as therein, thereunder, thereafter, and thereby.
Therewith combines there and with. Like many there-compounds, it survives most strongly in legal and literary English.
Use therewith only when the old-fashioned or legal tone is intentional. For clarity, "with it" usually wins.
You can also look up therewith on these trusted language resources:
Edited by Absurd Words. Last updated: May 14, 2026. See the editorial policy for how definitions, examples, labels, and update checks are handled on the site.