decline

Grow worse.

Go down.

“The roof declines here”

Inflect for number, gender, case, etc.

“in many languages, speakers decline nouns, pronouns, and adjectives”

Go down in value.

Show unwillingness towards.

“he declined to join the group on a hike”

Refuse to accept.

Grow smaller.

A condition inferior to an earlier condition; a gradual falling off from a better state.

A downward slope or bend.

A gradual decrease; as of stored charge or current.

Change toward something smaller or lower.