とお
oshitōsu

Godan Verb (su)

1. to persist in; to carry out; to have one's own way; to push through; to carry through

Transitive
かれ保守 ほしゅ とう一辺倒 いっぺんとう とうした。
karewa hoshutōippentōde oshitōshita.
He has remained pro-conservative throughout.
Other forms: