Last words somewhat difficult? I'm a taskmaster (8)

I believe the answer is:

ultimata

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

'last words' is the definition.
The answer and definition can be both related to communication as well as being plural nouns.
Maybe you can see an association between them that I can't see?

'somewhat difficult? i'm a taskmaster' is the wordplay.
'somewhat' indicates a hidden word.
'ULTIMATA' is hidden within 'difficult im a taskmaster'.

Can you help me to learn more?

(Other definitions for ultimata that I've seen before include "Final demands" , "Final offers" , "Last offers" .)

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.