conjunction
after all; anyway; actually; well, ...; ... on earth; ... in the world
Dated conjunction used to bring up something already mentioned, similar to そもそも. Often used in rhetorical questions or to emphasize a point. Rare in modern conversation.
See also: そもそも
そも、この計画は最初から無理があったのだ。
After all, this plan was unreasonable from the start.
そも、なぜそんなことをしたのか。
Why on earth did you do such a thing?