How to parse ～なくたって?


I've been running into verbs such as 言わなくたって recently. I found [these
sentences](http://eow.alc.co.jp/search?q=%E3%81%AA%E3%81%8F%E3%81%9F%E3%81%A3%E3%81%A6)
using a sample sentence search and it seems to be a stronger form of ～なくても

> 見てなく **たって** いいよ。 You don't have to stand over me.
>
> そんなトゲトゲしい言い方しなく **たって** いいだろう。 You don't have to use such a harsh tone with
> me.

Where can I find this in a dictionary? It doesn't seem to be [達て]{たって}, nor
the たって in 雨が降ったって出掛けるよ




This たって is the same as
[たって](http://dictionary.goo.ne.jp/leaf/jn2/137398/m0u/%E3%81%9F%E3%81%A3%E3%81%A6/)
(≒even if, even though) in 雨が降ったって出掛けるよ. The difference is that なく (te-form of
ない) is inserted between the main verb (=言う) and たって. (And of course 言う is in
its nai-form before ない)

>   * 言わなくたって分かるよ。 Even if you don't say it, (I/he) can understand.
>   * 言ったって分からないよ。 Even if you say it, (I/he) can't understand.
>

The literal translation of 見てなくたって would be "Even if you are not seeing,
(it's) okay." The opposite is 見てたっていいよ, which is the contracted form of
見ていたっていいよ.

And the negated version of 雨が降ったって is 雨が降らなくたって.

> 雨が降らなくたって傘を持っていくよ。




This たって is the same as
[たって](http://dictionary.goo.ne.jp/leaf/jn2/137398/m0u/%E3%81%9F%E3%81%A3%E3%81%A6/)
(≒even if, even though) in 雨が降ったって出掛けるよ. The difference is that なく (te-form of
ない) is inserted between the main verb (=言う) and たって. (And of course 言う is in
its nai-form before ない)

>   * 言わなくたって分かるよ。 Even if you don't say it, (I/he) can understand.
>   * 言ったって分からないよ。 Even if you say it, (I/he) can't understand.
>

The literal translation of 見てなくたって would be "Even if you are not seeing,
(it's) okay." The opposite is 見てたっていいよ, which is the contracted form of
見ていたっていいよ.

And the negated version of 雨が降ったって is 雨が降らなくたって.

> 雨が降らなくたって傘を持っていくよ。

