B1
not important
Dictionary examples:
Winning is unimportant. That's what losers always say! (0.0)
Being on time is unimportant to my friend. He's always late! (0.0)
Money is unimportant, said no one ever in the real world. (0.0)
Staffing is still a relatively unimportant issue compared to the other problems that we're facing. (66.1)