Nice trait unusually hard to resolve (9)

I believe the answer is:

intricate

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'hard to resolve' is the definition.
I can't tell whether this defines the answer.

'nice trait unusually' is the wordplay.
'unusually' is an anagram indicator.
'nice'+'trait'='nicetrait'
'nicetrait' anagrammed gives 'INTRICATE'.

Can you help me to learn more?

(Other definitions for intricate that I've seen before include "puzzlingly obscure" , "ornate" , "Very complicated and involved" , "Complex, labyrinthine" , "Complicated, detailed" .)

I've seen this clue in The Globe and Mail.

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