Rare beast in loch unexpectedly responsive to calming (12)

I believe the answer is:

restrainable

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'responsive to calming' is the definition.
I can't tell whether this defines the answer.

'rare beast in loch unexpectedly' is the wordplay.
'loch' becomes 'l'.
'unexpectedly' indicates an anagram.
'rare'+'beast'+'in'+'l'='rarebeastinl'
'rarebeastinl' anagrammed gives 'RESTRAINABLE'.

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I've seen this clue in The Times.

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