Therefore
Definition 1 of 2
Pro Tip 1/3
Logical Link
Use it to connect causes with their effects, showing clear logic in arguments or explanations. The roads were icy; therefore, the school cancelled classes.
Pro Tip 2/3
Formal Writing
It's more common in written English, especially in academic or formal contexts, than in casual speech. The experiment was a success; therefore, we will proceed to the next phase.
Pro Tip 3/3
Not a Starter
'Therefore' is not typically used to start a sentence in formal writing; prefer it mid-sentence. The data is incomplete, therefore we cannot reach a valid conclusion.