だけでも details

write + even just

kaku dake demo

even just; at least — the smallest version of something, offered as enough

meaning: even if you only write

高たかくて買かえないけど、見るみるだけでも楽たのしいよ。

takakute kaenai kedo, miru dake demo tanoshii yo.

I can't afford it, but it's fun even if you only look. casual

全部ぜんぶは無理むりでも、名前なまえだけでも覚おぼえて帰かえりたい。

zenbu wa muri demo, namaedakedemo oboete kaeritai.

Even if I can't manage it all, I want to go home having learned even just the name. neutral

dictionary form
noun
た-form

Examples

even just X — a small amount of it is already enough to do the job or show the point

高たかくて買かえないけど、見みるだけでも楽たのしいよ。

takakute kaenai kedo, mirudakedemo tanoshii yo.

I can't afford it, but it's fun even if you only look. casual

一度いちど使つかっただけでも、違ちがいがよく分わかる。

ichido tsukatta dake demo, chigai ga yoku wakaru.

You can tell the difference clearly just from using it once. neutral

at least X — a wish or a request scaled down to the smallest version the speaker would settle for

全部ぜんぶは無理むりでも、名前なまえだけでも覚おぼえて帰かえりたい。

zenbu wa muri demo, namaedakedemo oboete kaeritai.

Even if I can't manage it all, I want to go home having learned even just the name. neutral

忙いそがしいのは分わかるけど、電話でんわだけでもしてよ。

isogashii no wa wakaru kedo, denwa dake demo shite yo.

I know you're busy, but at least give me a call. casual

ご多忙たぼうのところ恐縮きょうしゅくですが、資料しりょうだけでもご覧らんいただけないでしょうか。

go tabou no tokoro kyoushuku desu ga, shiryou dake demo goran itadakenai deshou ka.

I am sorry to trouble you when you are busy, but might you at least look over the materials? formal

Formation

{N}だけでもattaches to noun
{V}だけでもattaches to dictionary form
{V-ta}だけでもattaches to た-form

Notes

だけで on its own says the small amount is all it takes (見みるだけで分わかる).
The も concedes instead: the speaker will settle for that much, whether or
not it is enough.

Related patterns

Similar

だけ
だけ draws the boundary and stops (見みるだけだ, looking and nothing more); でも makes that minimum a concession the main clause must follow FROM, good verdict or bad — 見みるだけでも楽たのしい, 想像そうぞうするだけでもぞっとする — so a predicate that grades the thing itself instead of the consequence, ×見みるだけでも赤あかい, has nothing to attach to.
さえ
さえ picks an extreme member to argue about the whole scale (子供こどもでさえ知しっている, therefore everyone does); だけでも argues about nothing beyond itself and scales a wish or a request DOWN to its floor — 話はなしだけでも聞きいて asks for less, not for proof about more.

Lookalikes

だけでなく
One kana apart and pointing opposite ways — だけでなく adds something on top of the だけ (見みるだけでなく触さわれる, look and also touch), だけでも settles for the だけ and asks for no more; read one as the other and what the sentence demands inverts.