What is another word for at one go?
Pronunciation: [at wˈɒn ɡˈə͡ʊ] (IPA) 
"At one go" is a commonly used phrase that implies doing something all at once or in a single attempt, without interruption. This phrase can be replaced with numerous synonyms to convey the same meaning. Some alternatives to "at one go" include "in one fell swoop," "in one shot," "all at once," "in one sitting," "in one take," "in one breath," "in one sweep," and "in a single blow." Each of these synonyms conveys the sense of completing something in one attempt and without any breaks. By using different synonyms for "at one go," writers can add variety to their writing and avoid repetition.
