Little rubbish is endured with ultimate character incarcerated (10)

I believe the answer is:

undersized

'little' is the definition.
(similar in meaning)

'rubbish is endured with ultimate character incarcerated' is the wordplay.
'rubbish' indicates an anagram (a poor quality or rubbish spelling of the letters).
'with' is a charade indicator (letters next to each other).
'ultimate character' becomes 'Z' (letter at the end of the alphabet).
'incarcerated' is an insertion indicator.
'is'+'endured'='isendured'
'isendured' anagrammed gives 'undersied'.
'undersied' enclosing 'z' is 'UNDERSIZED'.

I've seen this clue in The Guardian.

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