Repeat part of speech occasionally (4)

I believe the answer is:

echo

'repeat' is the definition.
(synonyms)

'part of speech occasionally' is the wordplay.
'part of' indicates a hidden word.
'ECHO' is hidden in the letters of 'speech occasionally'.

(Other definitions for echo that I've seen before include "copy" , "In The Maid of the Mountains" , "Reflection of sound waves" , "Reverberate - nymph spurned by Narcissus" , "Say again or imitate" .)

I've seen this clue in The Times.

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