Crossword Genius

Inspires with a blazing determination (5)

Ross

I believe the answer is:

fires

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

'inspires' is the definition.
The answer and definition can be both to do with human feelings as well as being verbs in their -s form.
Maybe they are linked in a way I don't understand?

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for fires that I've seen before include "Sacks; conflagrations" , "Cashiers" .)

I've seen this clue in the Evening Standard.
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