noun

ageing

aging, getting older, maturing

The signs of ageing are inevitable.

The signs of aging are inevitable.

We have an ageing population.

We have an aging population.

aging ((noun)) used as an adjective to mean 'becoming older'. We have an aging population.

the process of aging used as a noun for the process of getting older. The signs of aging are inevitable.

Synonyms: senescence, maturation; Antonyms: youth, growth

From the verb 'to age' plus the '-ing' suffix, forming a gerund (noun) or present participle (adjective). It denotes a process.

The '-ing' ending suggests an ongoing process or action. Think of the continuous process of getting older. Note the US spelling 'aging'.

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