Therefore - Crossword Clue, Answer and Explanation

I've seen this clue in the LA Times, The Wall Street Journal, the Penny Press, the Sydney Morning Herald, The Times, the King Feature Syndicate, the Newsday, the USA Today, The Telegraph, The Star Tribune, the Universal, the Evening Standard, The Independent, The Guardian and The Mirror.

'therefore' is the definition.
(synonyms)

This is the entire clue.

(Other definitions for thus that I've seen before include "In this way" , "as indicated" , "an original Christmas gift" , "It follows" , "Therefore, hence" .)

I've seen this clue in The Times, the King Feature Syndicate, the Newsday, the Newsday.com, the Universal, The Washington Post, The Star Tribune, The Independent, The New York Times, the Sydney Morning Herald, The Telegraph, The Guardian, The Mirror, the LA Times, The Wall Street Journal, The Sun, the USA Today, the Penny Press and the Evening Standard.

'therefore' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for ergo that I've seen before include "Thus" , "Consequently" , "'Cogito, ---- sum'" , "so philosopher wrote in Latin" , "It follows" .)

I've seen this clue in The Times, the King Feature Syndicate, the Newsday, the Newsday.com, the Universal, The Washington Post, The Star Tribune, The Independent, The New York Times, the Sydney Morning Herald, The Telegraph, The Guardian, The Mirror, the LA Times, The Wall Street Journal, The Sun, the USA Today, the Penny Press and the Evening Standard.

'therefore' is the definition.
('so' can mean 'consequently' or 'therefore')

This is the entire clue.

I've seen this clue in the King Feature Syndicate.

Therefore (5)