Continue not to tell the truth and don't move (3,5)

I believe the answer is:

lie still

I'm a little stuck... Click here to teach me more about this clue!

'tell the truth and don't move' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'continue not to' is the wordplay.
I cannot quite understand how this works, but
'to' could be 'til' (I've seen this in another clue) and 'til' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Irish Independent.

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