Initially trace extinct old wild ox, smaller, lacking in character? (11)

I believe the answer is:

textureless

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This clue could be a double definition.

'initially trace extinct old wild ox' is the first definition.
I can't judge whether this definition defines the answer.

'smaller lacking in character?' is the second definition.
The definition suggests a singular noun which matches the answer.

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I've seen this clue in The Times and The Sunday Times.

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