
Open English Wordnet
Nouns
(n)decline, declinationa condition inferior to an earlier condition; a gradual falling off from a better state; decline (n)decay, declinea gradual decrease; as of stored charge or current Verbs
(v)refuse, declineshow unwillingness towards“he declined to join the group on a hike” (v)declinego down“The roof declines here” (v)declineinflect for number, gender, case, etc.“in many languages, speakers decline nouns, pronouns, and adjectives”