N3 — outside your level filter
write + merely
tada kaku dake da
merely; nothing but — the thing is no more than what it is, and the speaker says so on purpose
meaning: do nothing but write
今できることはもうない。ただ待つだけだ。
ima dekiru koto wa mou nai. tada matsu dake da.
There is nothing more we can do now. We do nothing but wait. neutral
文句を言いたいわけじゃなくて、ただ確認したいだけなんだ。
monku o iitai wake ja nakute, tada kakunin shitai dake na n da.
I'm not trying to complain, I just want to check, that's all. casual