Power likely open to manipulation (7)

I believe the answer is:

pliable

I'm a little stuck... Click here to teach me more about this clue!

'open to manipulation' is the definition.
I can't tell whether this definition defines the answer.

'power likely' is the wordplay.
'power' becomes 'p' (symbol in physics).
'likely' becomes 'liable' (similar in meaning).
'p'+'liable'='PLIABLE'

Can you help me to learn more?

(Other definitions for pliable that I've seen before include "accommodating" , "Easily bent" , "Elastic" , "Flexible" , "Ductile" .)

I've seen this clue in The Times.

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