| biennial | (adj) occurring every second year, Syn. biyearly |
| biennially | (adv) every two years, Syn. biyearly |
| semiannual | (adj) occurring or payable twice each year, Syn. biannual, biyearly, half-yearly |
| semiannually | (adv) twice a year, Syn. biyearly |
| zweimal jährlich | zweimal im Jahr | biannual | biyearly [Add to Longdo] |