でさあ

you know

→ だ
phrase Rare #36,453
you know A folksy or dialectal sentence ending used to emphasize a statement. It is a drawn-out variant of です or ですよ and can also convey “indeed” or “that's right” depending on context.
JA: 今日はいい天気でさあ。
EN: It's lovely weather today, you know.

そうでさあ

Exactly.

— 東京物語 (1953)

ええですともよっぽどええでさあ

He’s a good man, indeed—an exceptionally good one.

— 東京物語 (1953)

幸せなでさあ

The happier one, you know.

— 東京物語 (1953)

ほんとうにお幸せでさあ

I truly wish you every happiness.

— 東京物語 (1953)