peter out

phrasal verb
petered out; petering out; peters out

Definition of peter out

informal
: to gradually become smaller, weaker, or less before stopping or ending Their romantic relationship petered out after the summer. Interest in the sport is beginning to peter out.

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Cite this Entry

“Peter out.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/peter%20out. Accessed 24 Sep. 2020.

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