They have the same meaning. 'Till' is less formal than 'until' so it's not used in writing. 'Until' is used in writing and can also be used in speaking. 'Un' here is not a prefix and has no unique meaning.
13 november 2020
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Hey! They have the same meaning. “Till” is not used as much as “until” in contemporary English. Till is the “Old English” version of until. But they can be used interchangeably.
13 november 2020
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Heb je je antwoorden nog steeds niet gevonden?
Schrijf je vragen op en laat de moedertaalsprekers je helpen!