それでも details
Examples
even so; and yet — the previous fact would lead you to expect otherwise, but this happens all the same
何度も失敗した。それでも、彼女はもう一度挑戦した。
nando mo shippai shita. soredemo, kanojo wa mou ichido chousen shita.
She failed over and over. Even so, she tried one more time. neutral
高いのは分かってる。それでも欲しいんだよね。
takai no wa wakatteru. soredemo hoshii n da yo ne.
I know it's expensive. I still want it, though. casual
天候は最後まで回復しませんでした。それでも、大会は予定どおり行われました。
tenkou wa saigo made kaifuku shimasen deshita. soredemo, taikai wa yotei doori okonawaremashita.
The weather never improved. Even so, the tournament was held as scheduled. formal
Formation
それでも、clauseattaches to plain clause
Notes
where the speaker admits the obstacle is real — それなのに, by contrast,
complains that the outcome is unfair.
Related patterns
Similar
ても packs the concession into one sentence and needs a verb to hang on (負けても続ける); それでも takes the concession from the sentence already finished, so the two facts can be a paragraph apart and the second one can be somebody else's remark.
しかし only announces that a contrast is coming, while それでも first grants the previous statement as a genuine reason to expect the opposite and then denies it anyway — 雨だ。それでも行く claims the rain was a real obstacle, which しかし leaves unsaid.
にもかかわらず is a written connective that can also sit inside the sentence after a noun (雨にもかかわらず); それでも stands only at the head of the following sentence and is the form ordinary speech uses.
Lookalikes
One kana apart and opposite in direction — それで draws the natural consequence (雨だった。それで中止した), それでも denies it (雨だった。それでも決行した); reading one as the other reverses the logic of the paragraph.