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Mr Domingo lacks nothing, and is calm (6)

Ross

I believe the answer is:

placid

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

I cannot understand how the remainder of the clue works.

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(Other definitions for placid that I've seen before include "Unexcitable" , "not easily angered" , "Calm and tranquil" , "Composed or serene" , "Calm and not easily upset" .)

I've seen this clue in the Evening Standard.
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