therefore
A2Pronunciation
UK
- /ðˈeəfɔː/
US
- /ˈðɛrˌfɔr/
Description
- so
- thus
- consequently
- hence
- for that reason
"Therefore" acts like a bridge in your thinking. It connects a reason to a result. For example, if you know the ground is wet, you might say: "It rained; therefore, the grass is slippery." It is a clear way of saying "because of this" or "for this reason," showing that one idea follows from what came before. You will often find it in arguments, explanations, and formal writing when someone wants to make their reasoning easy to follow.
Imagine you're building with LEGO bricks. You carefully stack one brick on top of another, following the instructions. Once you've completed a section, you might say, "I followed these steps; therefore, this part is finished." That is what "therefore" does: it signals that a conclusion has been reached based on the information that came before.
It is close to "so" or "for this reason," but it often sounds more formal and more deliberate. It usually points to a logical connection between one statement and the next. That is why it often appears in formal writing, legal documents, and scientific explanations. For example: "All mammals have hearts; whales are mammals; therefore, whales have hearts."
You might also hear it in everyday speech, although many people choose "so" instead. A detective might say, "The fingerprints match the suspect's; therefore, he was at the scene of the crime." Or a teacher might explain: "You didn't complete the assignment; therefore, you will receive a lower grade."
"Therefore" is not just about stating facts. It shows how facts connect and lead to an outcome or conclusion. It helps build arguments, clarify explanations, and guide the reader or listener from evidence to result.
Examples
- 1
Everyday consequence
She forgot to charge her phone and therefore couldn't call a taxi.
- 2
Travel problem
The road was closed; therefore, we had to take a longer route.
Usage
therefore is more common in careful writing than in casual speech.
- 3
Immediate decision
The weather is getting worse. We should therefore leave now.
- 4
Research results
The sample was contaminated, and the results were therefore unusable.
- 5
Medical warning
The medicine can cause drowsiness. Patients should therefore avoid driving after taking it.
- 6
Logical conclusion
The two statements cannot both be true; therefore, at least one of them is wrong.
Forms and spellings
1 form open this card.
Main spelling
- thereforeadverb