peter out vs poop out

peter out and poop out both are verbs.

Word	Noun	Adjective	Verb	Adverb
peter out	No	No	Yes	No
poop out	No	No	Yes	No

As verbs, peter out and poop out are synonyms defined as:

peter out and poop out: use up all one's strength and energy and stop working

Other synonyms of peter out include conk out, run down, run out.

peter out (verb)	poop out (verb)
use up all one's strength and energy and stop working	use up all one's strength and energy and stop working
end weakly