ageing
Scrooge!
Being elderly
Crotchety or cantankerous.
Dotage, declining years, geriatrics, seniority, autumn of life...
They are many: geezer, old-timer, senior, oldster, golden-ager, senior citizen, ancient, elder, retired person or old timer. Many of these will get you a sneer or worse.
Another word for not old is young.
Another word for getting shots is receiving vaccinations, or being vaccinated.
"Ancient" is another word for very old.
Another word for 40 year old is 4 decades. 8D
Sin.
Another word for an old female cat is a grimalkin.
convey
becoming accustomed to
Disembarking.
Productive
Getting backup
Throwing it out