No worries is a relaxed way of saying that something is fine. Thanks. No worries.
It is Australian in origin and spread through the English-speaking world in a generation. No worries answers thanks and an apology equally well, which is why it is so useful.
1phraseno worriesA relaxed way of saying that something is fine.
“He said no worries and moved the whole appointment.”
no worries is a phrase.
From no plus worries; the phrase is Australian and became general English in the late twentieth century.
Built from
From no + plural of worry (“concern, cause for anxiety”), but used flexibly.
Etymology from Wiktionary, CC BY-SA
Practised in Small Talk & Everyday Phrases