のろのろ
noronoro

Suru Verb
To-Adverb

1. slowly; sluggishly

Onomatopoeia
タクシーはカタツムリと おなじくらいのろのろ すすんでいるように おもえた。
takushiiwa katatsumurito onajikurai noronoro susunde iru yōni omoeta.
The taxi seemed to go as slowly as a snail.