improver

He introduced and encouraged manufactures of all kinds; and no inventor or improver of any ingenious art did he suffer to go unrewarded.

[…] may not one say Homer is in this like a skilful Improver, who places a beautiful Statue in a well-disposed Garden so as to answer several Vistas, and by that Artifice one single Figure seems multiply’d into as many Objects as there are Openings from whence it may be viewed?

The hotel can also arrange beginner and improver angling lessons with a local instructor.

Soy flour is often added to bread as an improver. It helps the dough texture and can make the bread quite soft.