Crossword Genius

So, therefore (4)

Ross

I think it could be either:

thus

ergo

This clue is a double definition.

'so' is the first definition.
(synonyms)

'therefore' is the second definition.
(I've seen this before)

(Other definitions for ergo that I've seen before include "Hence" , "as a consequence" , "Thus" , "'Cogito, ---- sum'" , "It follows" .)

I've seen this clue in The Guardian and The Irish Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.