What is another word for most back up?
Pronunciation: [mˈə͡ʊst bˈak ˈʌp] (IPA) 
The phrase "most back up" can be replaced with several different synonyms that all convey similar meanings. Some potential alternatives might include "support the most," "provide the strongest reinforcement," or "offer the greatest level of backup." Other options might include "supply the most assistance," "deliver the largest amount of aid," or "furnish the highest level of backing." Each of these phrases is designed to convey the idea that a particular item or idea is the one that provides the most support or helps to reinforce something in the best way possible. They can be useful for expressing ideas in a more concise or clear way.
