では無い

ではない

is not, am not, are not

では無かろうか

ではなかろうか

is it not so?

無い物は無い

ないものはない

there's nothing we (I, he, she, etc.) don't have

はず無い

はずない

it cannot be that...; it is highly unlikely that...; it is impossible that...

で無い

でない

is not, am not, are not

無理はない

むりはない

(to be) natural, (to be) understandable

はずの無い

はずのない

cannot (do); it is impossible that...; it is (highly) unlikely that...

はずが無い

はずがない

it cannot be that...; it is highly unlikely that...; it is impossible that...

それは無い

それはない

you must be kidding; hey, come on!; surely not!

では無さそう

ではなさそう

does not seem (to be)

無い無い

ないない

cleaning up; tidying up

しか無い

しかない

having no choice but to...; all one can do is...; there's nothing to do except...

でも無い

でもない

it is not (like that), used to explicitly deny one thing while also implicitly denying other things

無くては

なくては なくちゃ

unless, without

無しには

なしには

without

吝かではない

やぶさかではない

ready (to do); willing

ではでは

then; well; so; well then

無い

ない

nonexistent, not being (there)

じゃ無いか

じゃないか

isn't it?