Synonyms of 'until'
1 tillDictionary, up to, up tillconsumers who have waited until after the Christmas holiday
1 tillDictionary, up to, up tillI waited until it got dark.
The use of until such time as (as in Industrial action will continue until such time as our demands are met) is unnecessary and should be avoided: Industrial action will continue until our demands are met. The use of up before until is also redundant and should be avoided: the talks will continue until (not up until) 23rd March.
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Thesaurus for until from the Collins English Thesaurus
If something happens until a particular time, it happens during the period before that time and stops at that time.