Formal alternatives to good

Replace good with a word that states exactly what is positive.

Possessing desirable qualities; adapted to answer the end designed; promoting success, welfare, or happiness; serviceable; useful; fit; excellen…

Having the power to produce an effect or effects; producing a decided or decisive effect; efficient; serviceable; operative; as, an effective fo…

Conferring benefits; useful; profitable; helpful; advantageous; serviceable; contributing to a valuable end; -- followed by to.

The air bladder of a fish; as, cod sounds are an esteemed article of food.

Excelling; surpassing others in some good quality or the sum of qualities; of great worth; eminent, in a good sense; superior; as, an excellent…

Having ability to construct or form; employed in construction; as, to exhibit constructive power.

Set apart for a particular use or person. Hence: Belonging peculiarly; peculiar; suitable; fit; proper.