I am a friend, embracing one in grand manner (10)

I believe the answer is:

imperially

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

'i am a friend embracing one in grand manner' is the definition.
I can't tell whether this definition defines the answer.

'i am a friend embracing one' is the wordplay.
'i am' becomes 'I'm' (contraction).
'a' becomes 'per' (eg 'one a day' means 'one per day').
'friend' becomes 'ally' (an ally is a friend or supporter).
'embracing' means one lot of letters goes inside another.
'one' becomes 'i' (Roman numeral).
'per'+'ally'='perally'
'perally' placed around 'i' is 'perially'.
'im'+'perially'='IMPERIALLY'

Can you help me to learn more?

I've seen this clue in The Times.

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.