pe·ter 
/ˈpi:tɚ/ verb
pe·ters; pe·tered; pe·ter·ing /ˈpi:tɚ/ verb Meaning:
peter out
[phrasal verb] 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.
▪ Their romantic relationship petered out after the summer. ▪ Interest in the sport is beginning to peter out.
