used when you want to make a statement or opinion less definite

This is perhaps his best novel to date.

He had a difficult upbringing, which perhaps explains why he behaves like that.

a change which could affect perhaps 20 per cent of the population

used when you agree or accept something unwillingly, or do not want to say that you think something is bad

‘You could do it yourself.’ ‘Yeah, perhaps.’

used when making a polite request, offer or suggestion

Perhaps it would be better if you came back tomorrow.

I think perhaps you've had enough to drink tonight.

Perhaps you’d like to have a shower before the others arrive.

Perhaps you would be good enough to let him know we are on our way.

LEARNit Dictionary