どうも。

Dōmo.

Thanks. / Hi. / Sorry.

Word for word

“Very.” (short for どうもありがとう)

Politeness: Casual

Plain form. Fine with family, close friends and people younger than you. Rude to a stranger or a boss.

When you would say it

A nod-and-murmur for small things: a door held, change handed over.

Worth knowing

Works as thanks, a greeting or a light apology. Not enough for a real favour.