Pressing awkwardly about sign of hesitation produces ill-temper (10)

I believe the answer is:

grumpiness

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

'ill-temper' is the definition.
I can't judge whether this defines the answer.

'pressing awkwardly about sign of hesitation' is the wordplay.
'awkwardly' is an anagram indicator.
'about' is an insertion indicator.
'sign of hesitation' becomes 'um' (expression of hesitation).
'pressing' with letters rearranged gives 'grpiness'.
'grpiness' going around 'um' is 'GRUMPINESS'.

'produces' is the link.

Can you help me to learn more?

(Another definition for grumpiness that I've seen is " Bad humour".)

I've seen this clue in The Independent.

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.