One-time speakers don't do this - i.e. retreat in disorder (9)

I believe the answer is:

reiterate

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

'one-time speakers don't do' is the definition.
I can't judge whether this defines the answer.

'i e retreat in disorder' is the wordplay.
'in disorder' is an anagram indicator.
'i'+'e'+'retreat'='ieretreat'
'ieretreat' is an anagram of 'REITERATE'.

'this' acts as a link.

Can you help me to learn more?

(Other definitions for reiterate that I've seen before include "Recapitulate" , "Say again or repeatedly" , "Restate" , "sound twice?" , "Repeat" .)

I've seen this clue in The Irish News.

Want a hint initially instead of a full solution? Install my app