therefore

The word “therefore” means as a result; for that reason; consequently. In plain terms, a connecting word meaning "so" or "as a result" — used to introduce a conclusion.

“Therefore” is pronounced THEH-uh-faw (/ˈðɛɹ.fɔɹ/ in IPA).

Here is “therefore” used in a sentence: “It rained all day; therefore, the match was cancelled.”

Words with a similar meaning to “therefore” include then, thus, accordingly, as a result, it follows that and thereby.

The opposite of “therefore” — its antonyms — are nevertheless, to that end and to this end.

“Therefore” is an adverb.

The word “therefore” comes from Middle English. From Middle English therfore, a fusion of there and for, reshaped over time as if from there plus fore.

“Therefore” is a very common word in modern English, usually learned at around the A2 level.

"Because" introduces a cause or reason and comes before the explanation: "He left because he was tired." "Therefore" introduces a result or conclusion drawn from a reason: "He was tired; therefore, he left." One gives the cause, the other states the consequence that follows from it.

When "therefore" joins two independent clauses, use a semicolon before it and a comma after: "It rained; therefore, we stayed in." Placed mid-sentence, it is usually set off by commas: "We were, therefore, delayed." As a simple connector, the commas can sometimes be left out.

"Therefore" is fairly formal and common in academic, legal, and professional writing. In casual speech, people more often say "so." Both signal a conclusion, but "therefore" carries a more precise, logical tone that suits reasoned arguments and careful explanations.

Common alternatives include "so," "thus," "hence," "consequently," and "as a result." "So" suits everyday speech, while "thus" and "hence" fit formal writing. All of them introduce a conclusion or effect that follows logically from whatever was just stated.