ageingage‧ing /ˈeɪdʒɪŋ/ adjective 
► see thesaurus at old
THESAURUSperson
having lived for a long time: · an old man· I’m too old to learn a new language.
a polite word for old: · an elderly lady· a home for the elderly (=elderly people)· If you are elderly, you may be eligible for financial assistance.
(also ageing British English) [only before noun] becoming old: · an ageing rock star· the problems of an ageing population
[only before noun] written aged relatives are very old: · aged parents· She had to look after her aged aunt.
especially British English [only before noun] an older brother or sister. Elder sounds more formal than older: · I have two elder brothers.
[not usually before noun] informal very old – used humorously: · I’ll be 30 next year – it sounds really ancient!
informal to be fairly old: · He’s 60 now, so he’s getting on a bit.
(also be past it British English) informal to be too old to do something: · Everyone thinks you’re past it when you get to 40.
[only before noun] relating to medical care and treatment for old people: · a geriatric hospital· geriatric patients
thing · an old car· an old Chinese saying
very old – used about things that existed thousands of years ago, or things that look very old: · ancient civilisations· an ancient Rolls Royce
antique furniture, clocks, jewellery etc are old and often valuable: · an antique writing desk
used about traditions, problems, or situations that have existed for a very long time: · the age-old tradition of morris dancing· the age-old prejudice against women in positions of power· the age-old problem of nationalism· age-old hatreds between religious groups
Longman Language Activatorto become or start to look old · Aunt Bertha's getting old now, and she needs someone to take care of her.grow old gracefully (=accept old age easily) · She wanted to grow old gracefully, and retire to a cottage in the country.
if someone ages , they change so that they look older, because they have lived a long time or because they have suffered a lot over a particular period: · I couldn't believe how much she had aged.· She noticed for the first time how Frederick had aged.· Western men tend to age more quickly than Japanese men.
the process of becoming old: · Our society is full of negative attitudes towards ageing and old people.the ageing/aging process: · Some memory loss is a normal part of the aging process.premature ageing/aging (=ageing earlier than usual): · His hair was white and he showed other signs of premature ageing.
if someone shows their age , they look older, or they talk or behave in a way that makes other people realize they are old: · She's still very beautiful, but she's starting to show her age now.· This is probably showing my age, but I remember when popcorn cost 25 cents and came in those little white paper bags.
COLLOCATIONS FROM OTHER ENTRIES
Europe’s ageing population (=with more old people than before)
a British spelling of aging Europe’s ageing population (=with more old people than before) (=gradually becoming older on average)· The rapidly ageing population will put a strain on the country's health care system.
► see thesaurus at old