I mean

Particle

colloquial

(colloquial) A delaying filler. / (colloquial) A mild intensifier. / (colloquial) An indication of approximation or uncertainty.

Japanese Meaning

(口語) 会話中のつなぎ語として使用され、話の展開を遅らせる役割を果たす表現 / (口語) 穏やかな強調を表現するために用いられる / (口語) おおよその意味や不確実性を示すために使われる

I mean, we could always reschedule if that works better.

えっと、もしそれで都合が良ければ、いつでも予定を変更できますよ。

Sense（1）

(colloquial) A delaying filler.

They were filth, utter filth. I mean, and this tops it. She even bought the video of her sister dying, or at least the sex act that killed her.

Sense（2）

(colloquial) A mild intensifier.

Sense（3）

(colloquial) An indication of approximation or uncertainty.

I mean, it very well could be.