Ergo is sometimes used instead of 'therefore' to introduce a clause in which you mention something that is the consequence or logical result of what you have just said.
[formal, or literary]
Neither side would have an incentive to start a war. Ergo, peace would reign.
More Synonyms of ergo
ergo in British English1
(ˈɜːɡəʊ)
sentence connector
therefore; hence
Word origin
C14: from Latin: therefore
ergo in British English2
(ˈɜːɡəʊ)
noun
informal short for ergometer (sense 2)
ergo in American English
(ˈɛrgoʊ)
adverb
therefore; hence
often used as a conjunctive adverb
Examples of 'ergo' in a sentence
ergo
`Raison d'être" and ` ergo " insinuated themselves into every one of his calls.
Telushkin, Josef THE UNORTHODOX MURDER OF RABBI MOSS (2001)
We say weak effects, uncertain effects, no causality, small N, ergo not a fact.
Michael Gruber TROPIC OF NIGHT (2001)
(conjunction)
Definition
therefore
Neither side had an incentive to start a war. Ergo, peace would reign.