decline
noun.
change toward something smaller or lower
Synonym: diminution
noun.
a condition inferior to an earlier condition; a gradual falling off from a better state
Synonym: declination
noun.
a gradual decrease; as of stored charge or current
Synonym: decay
noun.
a downward slope or bend
verb.
grow worse
Conditions in the slum worsened
Synonym: worsen
verb.
refuse to accept
He refused my offer of hospitality
verb.
show unwillingness towards
he declined to join the group on a hike
Synonym: refuse
verb.
grow smaller
Interest in the project waned
Synonym: go down, wane
verb.
go down
The roof declines here
verb.
go down in value
the stock market corrected|prices slumped
Synonym: correct, slump
verb.
inflect for number, gender, case, etc.
in many languages, speakers decline nouns, pronouns, and adjectives
Antonym: improvement