get on

UK
(US also UK get along)
to have a good relationship:
We're getting on much better now that we don't live together.
He doesn't get on with his daughter.
We haven't been getting on recently.
It's important that you get on with your colleagues.
Do you get on with your brother?
They got on better when they were children.
He gets on with everyone.

UK
(US also UK get along)
to manage or deal with a situation, especially successfully:
How are you getting on in your new home?
We're getting on quite well with the decorating.

UK
to continue doing something, especially work:
I'll leave you to get on then, shall I?

informal
to be getting old:
He's getting on (a bit) - he'll be 76 next birthday.

UK informal
If you say it's getting on, or time is getting on, you mean it is becoming late:
It's getting on - we'd better be going.

getting on for UK (US going on)
almost:
He must be getting on for 80 now.
It was getting on for midnight.
(Cambridge Advanced Learner's Dictionary & Thesaurus からの get on の定義 © Cambridge University Press)

アメリカ英語辞典
to grow old:
Uncle Meade’s getting on in years – he’s 76.
(Cambridge Academic Content Dictionary からの get on の定義 © Cambridge University Press)

- Cambridge Dictionary