Biannually.
Biannual means twice every year.
biannual
bi-yearly.
Biannual
Biannual
Biannual
An event occurs 2 times in a year
Bi-annual = twice a year Bi-ennial = every two years
Biannual
Semiannual means every six months which would make it twice a year. Biannual can mean twice a year but it's ambiguous because it can also mean every two years.
biannual