Heather with repeated hesitation is one who loiters (8)

I believe the answer is:

lingerer

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'one who loiters' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

'heather with repeated hesitation' is the wordplay.
'heather' becomes 'ling' (synonyms).
'with' is a charade indicator (letters next to each other).
'repeated' indicates the doubling of some letters.
'hesitation' becomes 'er' (sound used when hesitating).
'er' doubled is 'erer'.
'ling'+'erer'='LINGERER'

'is' is the link.

Can you help me to learn more?

(Other definitions for lingerer that I've seen before include "Person prolonging departure" , "One hanging behind" .)

I've seen this clue in The Telegraph.

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