Achievement having no seconds in banquet (4)

I believe the answer is:

feat

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'achievement' is the definition.
(I know that feat is a type of achievement)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for feat that I've seen before include "Deed; achievement" , "Achievement needing skill, strength, etc." , "Achievement needing great courage or skill" , "Significant achievement" , "Notable achievement" .)

I've seen this clue in The Sun.

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