ultra

US /ˈʌl.trə/
UK /ˈʌl.trə/
1.

siêu

very; extremely.

:
the play was not just boring, it was ultra boring
1.

siêu

1.

siêu

an extremist.

:
ultras in the animal rights movement
2.

siêu

short for

:
the best way to tackle an ultra is to divide the race into manageable chunks