On March 29, the United Kingdom will leave the European Union. Probably.

Since Prime Minister Theresa May invoked Article 50, setting in motion a two-year exit process, the British government and the European Union have sparred over what Brexit might mean in practice. Questions have swirled. Will European Union citizens in Britain, and Britons in the union, be guaranteed the right to stay? Will trade and transportation be disrupted — and with them, vital supplies? And if a hard border is imposed between Northern Ireland and the Republic of Ireland, will the United Kingdom itself unravel?

Mrs. May’s draft deal, announced on Tuesday evening and presented to Parliament on Thursday, has done little to settle matters. Met with cabinet resignations and widespread expectation of failure, it is unlikely to break the impasse.

And so with less than five months left, the fact of departure — let alone the details of what may come after — remains unclear. We asked readers in the United Kingdom, and British citizens in the bloc, how they were preparing.

Hundreds of responses came in. Some were optimistic; others were ambivalent. But a majority of people expressed anxieties — about their families, livelihoods, public services, residency rights and futures — with uncertainty the dominant mood.