adverb
even at the best of times; already (in a negative context); as it is
Emphasizes that a situation is already difficult, bad, or extreme, and adding something else makes it worse. Often used with negative or undesirable outcomes.
ただでさえ忙しいのに、さらに仕事を頼まれた。
I'm already busy as it is, and on top of that I was asked to do more work.
ただでさえ狭い部屋なのに、家具を増やすなんて無理だ。
The room is already small as it is; there's no way we can add more furniture.