Being decisive means making a decision and sticking to it. The crossword solutions for the term 'be decisive' are OPT (3 letters), CHOOSE (6 letters), ACT (3 letters), BURNONESBRIDGES (15 letters), CROSSTHERUBICON (15 letters), and PUTONESFOOTDOWN (15 letters). OPT stands for 'OPTIMAL', which means to CHOOSE the best option. CHOOSE implies selecting one option from a set of choices. ACT suggests taking action on the chosen option. BURNONESBRIDGES is an idiom that means to make a decision that cannot be reversed. CROSSTHERUBICON is another idiom that means to make a commitment to a decision that cannot be undone. Finally, PUTONESFOOTDOWN is an idiom that means to take a firm stance on a decision. All of these terms suggest that being decisive involves making a choice and following through with it.