Not to worry means never mind, it's no problem. It reassures someone after a small mishap, mostly in British conversation: You've missed the first bus? Not to worry; another one comes in ten minutes. The way out usually follows: there's a backup copy, another bus, a spare ticket.
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Not to worry. / Not to worry, + reassurance or another plan
- Not to worry, I saved a copy before the laptop shut down.
- You've missed the first bus? Not to worry; another one comes in ten minutes.
- Not to worry about the broken cup. It was already chipped.
What changed
First versionNot to worried, we can move the picnic indoors.
RevisionNot to worry, we can move the picnic indoors.
Worry is about how you feel, so the adjective worried seems to fit: not to worried. But after to you always need the base form: not to worry. Worried belongs in a different pattern: don't be worried.
Don't worry is the ordinary request not to worry, and it fits anywhere: Don't worry, I'll help you. Not to worry is a lighter 'no big deal' about a small thing that has already happened. Never mind means 'forget it, it doesn't matter': it closes the topic rather than solving it.
Your turn
Reassure someone after a small problem: Not to ___, I brought an extra ticket.
Show the answer
worry — After to you need the base form: not to worry. Worried is an adjective and needs be: don't be worried.
A friend spilled coffee on your tablecloth and keeps apologising. Reassure them in one sentence with not to worry.
Not to worry — it'll come out in the wash.
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