anything and everything; all sorts of things
Emphasizes an indiscriminate, sweeping inclusion of things, often with a negative or critical tone when overdone.
He thinks he knows anything and everything.
なんでもかんでも買ってしまう癖がある。
I have a habit of buying all sorts of things indiscriminately.
Used when someone insists on doing something no matter what, often with a stubborn or desperate nuance.
なんでもかんでも自分の意見を通そうとする。
He tries to push his opinion through by all means.
なんでもかんでも勝ちたいという気持ちが強すぎる。
His desire to win at any cost is too strong.
He opposes absolutely everything, no matter what it is.
He insists on doing everything himself, no matter what.
Kids tend to want absolutely everything they see.