deciding

Noun	1.	deciding - the cognitive process of reaching a decision; "a good executive must be good at decision making" Synonyms: decision making
Adj.	1.	deciding - having the power or quality of deciding; "the crucial experiment"; "cast the deciding vote"; "the determinative (or determinant) battle" Synonyms: determinant, determinative, determining, crucial

crucial, decisive, determinant, determinative, determining