What is another word for firmed up?
Pronunciation: [fˈɜːmd ˈʌp] (IPA) 
"Firmed up" is a commonly used phrase that refers to something becoming more stable, solid, or certain. There are several synonyms that can be used instead of "firmed up," depending on the context. For example, the phrase "solidified" can be used to describe something that has become more stable or set in place. "Strengthened" is another synonym that can be used to refer to something becoming more solidified or secure. Additionally, "confirmed" can be used to describe something that has become more certain or established. Other synonyms for "firmed up" include "settled," "established," and "strengthened".
