ageist
agist AmE

"That is a planet where the Ageist influence is particularly strong, isn't it?"

There's still the matter of an Ageist conspiracy."

Has the doctor diagnosed accurately or have 'ageist' considerations clouded medical judgement?

We must take steps against the Ageist conspiracies; the shortlifes, if they realize the danger they're in, outnumber us at this point and could be dangerous.

"Ser Conselline and Ser Morrelline have alleged an Ageist conspiracy, my lords and ladies.

Proposal to create a special commission to investigate Ageist influence in the Regular Space Service, and another to investigate the inappropriate use of Space Service resources for private purposes.