2 adverbs to describe how to buttress

This fragment is the gracefully buttressed east end of the choir, which rises from the level meadow-land to the east of the town.

Before him stands a parapet, buttressed mayhap with hurdles or balks of timber, the whole being designed to preserve his life from hostile projectiles.

2 adverbs to describe how to  buttress  - Adverbs for  buttress