verbs
grow worse
"Conditions in the slum worsened"
refuse to accept
"He refused my offer of hospitality"
show unwillingness towards
"he declined to join the group on a hike"
grow smaller
"Interest in the project waned"
go down
"The roof declines here"
is a type of (narrower)
to fall vertically
"the bombs are dropping on enemy targets"
go down in value
"the stock market corrected"; "prices slumped"
inflect for number, gender, case, etc., "in many languages, speakers decline nouns, pronouns, and adjectives"
is a type of (narrower)
change the form of a word in accordance as required by the grammatical rules of the language