declinable

/dɪˈklaɪnəbəl/
adjective
  1. Capable of being declined or refused.
    • The job was declinable, but she decided to accept it anyway.
    • The invitation was declinable without giving a reason.
    • Some offers are declinable if they don't meet your needs.
  2. (grammar) Referring to a word that can change its form to show case, number, or gender.
    • Students learn which parts of speech are declinable in their language class.
    • German adjectives are declinable depending on the article used.
    • In Latin, nouns are declinable, but adverbs are not.
Antonyms
What does "declinable" mean? | whatsthatwordmean | whatsthatwordmean