Ice-cold or otherwise, one’s emotion is considered insincere (9)

I believe the answer is:

crocodile

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

'one's emotion is considered insincere' is the definition.
I can't judge whether this defines the answer.

'ice-cold or otherwise' is the wordplay.
'otherwise' indicates an anagram.
'ice'+'cold'+'or'='icecoldor'
'icecoldor' is an anagram of 'CROCODILE'.

Can you help me to learn more?

(Other definitions for crocodile that I've seen before include "Vicious beast" , "Line of children walking in twos" , "Large reptile with long jaws" , "Recoil, doc, from the reptile" , "line of schoolkids?" .)

I've seen this clue in The Hindu.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.