THEREFORE

therefore, hence, thence, thus, so

(adverb) (used to introduce a logical conclusion) from that fact or reason or as a result; “therefore X must be true”; “the eggs were fresh and hence satisfactory”; “we were young and thence optimistic”; “it is late and thus we must go”; “the witness is biased and so cannot be trusted”

consequently, therefore

(adverb) as a consequence; “he had good reason to be grateful for the opportunities which they had made available to him and which consequently led to the good position he now held”

Source: WordNet® 3.1

---

Etymology

Adverb

therefore (not comparable)

(conjunctive) For that or this purpose, referring to something previously stated.

(conjunctive) Consequently, by or in consequence of that or this cause; referring to something previously stated.

Synonyms

• (for that purpose): so, thus, to that end, to this end

• (consequently): hence, then, thus, accordingly, as a result, thereby, eo ipso, ∴ (math); See also therefore

Source: Wiktionary

---

There"fore, conj. & adv. Etym: [OE. therfore. See There, and Fore, adv., For, and cf. Therefor.]

1. For that or this reason, referring to something previously stated; for that. I have married a wife, and therefore I can not come. Luke xiv. 20. Behold, we have forsaken all, and followed thee; what shall we have therefore Matt. xix. 27.

2. Consequently; by consequence. He blushes; therefore he is guilty. Spectator.

Syn.

– See Then.

Source: Webster’s Unabridged Dictionary 1913 Edition

---