うなぎ のぼりではありませんでした
unaginoboridewārimasendeshita

Noun
Desu Copula
no-Adjective

The polite, past negative form of うなぎ登り

1. Was not rising sharply.; Was not increasing rapidly.; Was not on a steep incline.

Past/Perfective
Negative
Polite
Formal Register