Meanings
From ellipsis of "how is that so?", and also continuing Middle English how-so, hou-so, hu se (“however, in whatsoever way”); equivalent to how + so. Compare West Frisian hoesa (“how so, why”), Dutch hoezo (“how so, why”), German Low German woso (“how so, why”), German wieso (“how so, why”), Swedish hurså (“how so”).
How to pronounce "how so":
AU
How?; In what way?
Why?; For what reason?
How; In what way; however
Why; For what reason.
Used as an intensifier.
Example Sentences
1
He claims to be the best, but I don't see how so.
2
She said she was busy, but I'm not sure how so.
3
I heard he won the competition, but I wonder how so.
4
The recipe calls for a lot of spices, but I don't know how so.
5
He said he was successful because of hard work, but others question how so.