is it a n ideom and can we use this word at the place of fail.

"Tom fizzled out from the top of the mountain"

main word " fizzle"
It is an informal definition of fizzle.

When a flame fizzles out, it come to an end - but you can see that end coming - it sputters, flickers, dims, and goes out.

Whan a project fizzles out, it fails, but you can see the end coming - lots of signs are there.
a.prvzcan we use this word at the place of fail.
I think you may be confusing fail and fall. fizzle out can replace fail, but not fall.

Tom fell from the top of the mountain. Not fizzled out.

Be careful where you step. The floor is slippery. I don't want you to fall. Not I don't want you to fizzle out.

CJ
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a.prvz"Tom fizzled out from the top of the mountain"
Well, if Tom were a mountain climber, you could say: Tom's strength fizzled out (=failed) so he never attained the summit.

That is different from falling off the mountain. (And less of a disaster! Emotion: smile)
AlpheccaStarsWell, if Tom were a mountain climber, you could say: Tom's strength fizzled out (=failed) so he never attained the summit.
You could! You could! Nevertheless, my intuition tells me, right or wrong, that the OP was picturing a fall. I take this from the use of "from" rather than "at". Had I seen,

Tom fizzled out at the top of the mountain.

I might have had a different view of the sentence. Emotion: smile

CJ
AlpheccaStarsIt is an informal definition of fizzle.
When a flame fizzles out, it come to an end - but you can see that end coming - it sputters, flickers, dims, and goes out.

Whan a project fizzles out, it fails, but you can see the end coming - lots of signs are there.
hi AlpheccaStars

Thanks for this
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AlpheccaStarsIt is an informal definition of fizzle.
When a flame fizzles out, it come to an end - but you can see that end coming - it sputters, flickers, dims, and goes out.

Whan a project fizzles out, it fails, but you can see the end coming - lots of signs are there.
HI AlpheccaStars,

Means, "fizzles out" can be used where strength is going down from the top........... it will not use for physical strength... just for skill related.........
CalifJim
a.prvzcan we use this word at the place of fail.
I think you may be confusing fail and fall. fizzle out can replace fail, but not fall.

Tom fell from the top of the mountain. Not fizzled out.
Be careful where you step. The floor is slippery. I don't want you to fall. Not I don't want you to fizzle out.

CJ
hi CalifJim

Yes, I was confuse but its clear now, thanks Califjim realy help ful..